Thursday
September 3, 2015

Homework Help: Math: Calculus

Recent Homework Questions About Calculus

calculus
An object has a constant acceleration of 40 ft/sec^2, an initial velocity of −20 ft/sec, and an initial position of 10 ft. Find the position function, s(t), describing the motion of the object.
Thursday, April 16, 2015 by Anonymous

pre - CALCULUS
Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2
Wednesday, April 15, 2015 by Ciara

pre - CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
Wednesday, April 15, 2015 by Ciara

pre - CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
Wednesday, April 15, 2015 by Ciara

calculus (please help. URGENT!)
A hemispherical tank with a radius of 10m is filled from an input pipe at a rate of 3m^3/min. How fast is the water level rising when the water level is 5m from the bottom of the tank? (hint: the volume of the cap of thickness of h sliced from a sphere of radius r is pih^2(3r-...
Wednesday, April 15, 2015 by Linda

calculus
A hemispherical tank with a radius of 10m is filled from an input pipe at a rate of 3m^3/min. How fast is the water level rising when the water level is 5m from the bottom of the tank? (hint: the volume of the cap of thickness of h sliced from a sphere of radius r is pih^2(3r-...
Wednesday, April 15, 2015 by Linda

calculus (optimization prob help!)
Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
Wednesday, April 15, 2015 by Linda

calculus (steps and explanation plz)
Find a curve y=f(x) with the following properties (i) y"=6x and (ii) its graph passes through the point (1,1) and has a horizontal tangent there.
Wednesday, April 15, 2015 by Linda

pre - CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
Wednesday, April 15, 2015 by Ciara

Pre - CALCULUS
Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x - 3,lim x -->5 f(x)
Wednesday, April 15, 2015 by Ciara

calculus
3:For an object whose velocity in ft/sec is given by v(t) = −2t^2 + 4, what is its distance travelled, in feet, on the interval t = 0 to t = 2 secs? a:4.876 b:2.667 c:9.752 d:2.438
Tuesday, April 14, 2015 by Anonymous

calculus multiple choice
1.The region in the first quadrant bounded by the x-axis, the line x = ln(π), and the curve y = sin(e^x) is rotated about the x-axis. What is the volume of the generated solid? a: 0.906 b:0.795 c:2.846 d: 2.498 2.Find the average value of f(x)=2/x over the interval [1, 3...
Tuesday, April 14, 2015 by Anonymous

PRE - CALCULUS
Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x - 3,lim x -->5 f(x)
Tuesday, April 14, 2015 by Ciara

Calculus
We can find some of the solutions of sin x = 0.2 graphically by graphing y = sin x and y = 0.2 (I was able to figure this one out) Use the graph below to estimate some of the solutions. (Let −3π < x < 3π.) Enter your answers as a comma-separated list. ...
Tuesday, April 14, 2015 by Angela

Pre - CALCULUS
Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x - 3,lim x -->5 f(x)
Tuesday, April 14, 2015 by Ciara

Pre-Calculus (Check)
Please tell me what I'm doing wrong... The side lengths of tops of three squares tables can be described as three consecutive integers. The combined area of the table tops is 677 sq in. Algebraically, determine the roots of the quadratic equation. (I'll use quadratic, ...
Tuesday, April 14, 2015 by Lucina

Calculus
A rectangular page is to have a print area of 96 square inches. The top and bottom margins are to be 1.5 inches each and the left and right margins are to be 1 inch each. What dimensions will minimize the total area of the page. I got L=8sqr(2) But I'm not sure how to get...
Monday, April 13, 2015 by Terry

calculus
A 15-ft ladder rests against a vertical wall. If the top of the ladder slides down the wall at a rate of 0.33 ft/sec, how fast, in ft/sec, is the bottom of the ladder sliding away from the wall, at the instant when the bottom of the ladder is 9 ft from the wall? Answer with 2 ...
Monday, April 13, 2015 by emma

Calculus
a) The value of a computer after t years after purchase is v(t) = 1000e^(-0.45t). At what rate is the computer's value falling after 5 years? b) Assume that the total revenue received from the sale of x items is given by R(x) = 32 ln (5x+3), while the total cost to produce...
Monday, April 13, 2015 by Jack

calculus
The area A = πr2 of a circular water ripple changes with the radius. At what rate does the area change with respect to the radius when r = 4ft?
Monday, April 13, 2015 by emma

Pre-Calculus
The equation H(t) = 30 + 24t - 6t^2 describes the height of a ball at any time t. What's the height of the ball after two seconds h = 30 + 24(2) + 6(2)^2 h = 30 + 48 -24 h = 54 units Therefore, the maximum height is 54 units
Monday, April 13, 2015 by Lucina

calculus
The height of a cylinder with a fixed radius of 4 cm is increasing at the rate of 2 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 14cm.
Monday, April 13, 2015 by emma

Calculus
How can I solve this using Log differentiation? I'm not sure how to even start it. y=(cos(x)(x^2+9)^(2/3)/(sqr(x^3+2))
Monday, April 13, 2015 by Cam

calculus
The base of a solid is the region in the first quadrant bounded by the graph of y = 3/(e^x) , the x-axis, the y-axis, and the line x=2. Each cross section of this solid perpendicular to the x-axis is a square. What is the volume of the solid?
Monday, April 13, 2015 by sss

pre - CALCULUS
Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0
Monday, April 13, 2015 by Ciara

Calculus
The management of the UNICO department store has decided to enclose an 870 ft2 area outside the building for displaying potted plants and flowers. One side will be formed by the external wall of the store, two sides will be constructed of pine boards, and the fourth side will ...
Monday, April 13, 2015 by Joey

Pre - CALCULUS
Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0
Monday, April 13, 2015 by Ciara

Pre - CALCULUS
Locate the foci of the ellipse. Show your work. 𝑥2/36+ y2/11=1
Monday, April 13, 2015 by Ciara

pre - CALCULUS
Find the indicated sum. Show your work. 4 k=1 (-1)^k(k+11) Inbetween the 4 and k , Theres a backwards 3 sign
Monday, April 13, 2015 by Ciara

Pre-Calculus
Have I converted correctly from standard form to vertex form? y = -3x^2 + 12x+1 = y = -3(x-2)^2 -13 Thanks
Monday, April 13, 2015 by Lucina

PRE - CALCULUS
Eliminate the parameter t. Find a rectangular equation for the plane curve defined by the parametric equations. x = 6 cos t, y = 6 sin t; 0 ≤ t ≤ 2π A. x2 - y2 = 6; -6 ≤ x ≤ 6 B. x2 - y2 = 36; -6 ≤ x ≤ 6 C. x2 + y2 = 6; -6 ≤ x &#...
Sunday, April 12, 2015 by Ciara

calculus rates
The altitude (i.e., height) of a triangle is increasing at a rate of 2 cm/minute while the area of the triangle is increasing at a rate of 4 square cm/minute. At what rate is the base of the triangle changing when the altitude is 10.5 centimeters and the area is 97 square ...
Sunday, April 12, 2015 by Anonymous

Pre-calculus
The sum of the first two terms of an arithmetic series is 13 and the sum of the four terms is 46. Determine the first six terms of the series and the sum of the first six terms.
Sunday, April 12, 2015 by Tawana

Pre-calculus
Can someone please help me with this problem.. I don't get it! Solve (sqrt 5r - 9)-3 = sqrt(r+4)-2
Saturday, April 11, 2015 by Lucina

pre - CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z = 9 2x - 3y + 4z = 7 x - 4y + 3z = -2 A. {(-7z/5+34/5 ,2z/5 +11/5 , z)} b. {(- 7z/5+34/5 , 2z/5- 11/5 , z)} c . {( z/5+ 34/5 , 2z/5+11/5 , z)} C?
Saturday, April 11, 2015 by Ciara

Pre - CALCULUS
Find the inverse of the matrix, if possible. A = { 0 -6 } {-2 -5} A. 0 -1/2 -1/6 5/12 B. -1/6 0 5/12 - 1/2 C. 5/12 - 1/2 -1/6 0 D. 5/12 1/2 1/6 0 C ?
Saturday, April 11, 2015 by Ciara

Pre - CALCULUS
Use Cramer's rule to solve the system. 2x + 4y - z = 32 x - 2y + 2z = -5 5x + y + z = 20 A. {( 1, -9, -6)} B. {( 2, 7, 6)} C. {( 9, 6, 9)} D. {( 1, 9, 6)} d ?
Saturday, April 11, 2015 by Ciara

Calculus
The altitude (i.e., height) of a triangle is increasing at a rate of 2 cm/minute while the area of the triangle is increasing at a rate of 4 square cm/minute. At what rate is the base of the triangle changing when the altitude is 10.5 centimeters and the area is 97 square ...
Saturday, April 11, 2015 by Anonymous

pre - CALCULUS
Let B = [-1 3 6 -3]. Find -4B. A. [-4 12 24 -12] B. [-3 1 4 -5] C. [4 -12 -24 12] D. [4 3 6 -3] b ?
Saturday, April 11, 2015 by Ciara

pre - CALCULUS
Use Cramer's rule to determine if the system is inconsistent system or contains dependent equations. 2x + y = 8 6x + 3y = 24 A. system is inconsistent B. system contains dependent equations b ?
Saturday, April 11, 2015 by Ciara

pre - CALCULUS
Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. x + y = -8 x - y = 14 A. {( 3, -11)} B. {( 3, 11)} C. {(x, y) | x + y = -8} D. ∅ B?
Saturday, April 11, 2015 by Ciara

calculus
A cylindrical drum with an open top is to be constructed using 1 m^2 of aluminum a)write and equation for the volume of the drum in terms of radius b)what radius gives the direct maximum value? c)What is the maximum volume if the radius can be a maximum of 0.2m ? c)
Saturday, April 11, 2015 by lotus

Calculus(easy)
Suppose the derivative of a function f is f′(x)=(x−5)^3(x−3)^4(x​+18)^8. Then the function f is increasing on the interval Can anyone please help me with this problem. It seems simple, but I just do not understand it.
Friday, April 10, 2015 by Ryan kustin

Calculus(urgent please help)
Consider the following function f(x)=x^2/[x^2-9] f(x) is increasing on the interval(s) f(x) is decreasing on the interval(s) f(x) has 2 vertical asymptotes x= f(x) is concave up on the interval(s) f(x) concave down on the interval(s) I've been stuck on these parts, I ...
Friday, April 10, 2015 by Ryan kustin

pre - CALCULUS
Complete the following: (a) Use the Leading Coefficient Test to determine the graph's end behavior. (b) Find the x-intercepts. State whether the graph crosses the x-axis or touches the x-axis and turns around at each intercept. Show your work. (c) Find the y-intercept. ...
Friday, April 10, 2015 by Ciara

pre - CALCULUS
Use the compound interest formulas A = Pert and A = P(1 + 𝑟/n)^nt to solve. Suppose that you have $11,000 to invest. Which investment yields the greater return over 10 years: 6.25% compounded continuously or 6.3% compounded semiannually? Show your work.
Friday, April 10, 2015 by Ciara

Pre - CALCULUS
For the data set shown by the table, a. Create a scatter plot for the data. (You do not need to submit the scatter plot) b. Use the scatter plot to determine whether an exponential function or a logarithmic function is the best choice for modeling the data. Number of Homes ...
Friday, April 10, 2015 by Ciara

Pre-calculus help
I have two problems I am stuck on, if you could show me how to solve the problems it would be much appreciated. 1) Find sin 2x, cos 2x, and tan 2x from the given information. tan x = − 1/6, cos x > 0 sin 2x = cos 2x = tan 2x = 2) Find sin 2x, cos 2x, and tan 2x from ...
Friday, April 10, 2015 by Holly

pre - CALCULUS
Begin by graphing the standard absolute value function f(x) = | x |. Then use transformations of this graph to describe the graph the given function. h(x) = 2 | x | + 2
Friday, April 10, 2015 by Ciara

pre - CALCULUS
Find the specified vector or scalar. Show your work. u = -4i + 1j and v = 4i + 1j; Find ‖𝑢 + 𝑣‖.
Friday, April 10, 2015 by Ciara

pre - CALCULUS
Find functions f and g so that h(x) = (f ∘ g)(x). h(x) = (6x - 14)8
Friday, April 10, 2015 by Ciara

pre - CALCULUS
Begin by graphing the standard absolute value function f(x) = | x |. Then use transformations of this graph to describe the graph the given function. h(x) = 2 | x | + 2
Friday, April 10, 2015 by Ciara

pre - CALCULUS
Find the reference angle for the given angle. Show your work. -404° my answer is 44 degree , But i don't know how to put my work together..
Friday, April 10, 2015 by Ciara

pre - CALCULUS
Find functions f and g so that h(x) = (f ∘ g)(x). h(x) = (6x - 14)8
Friday, April 10, 2015 by Ciara

Calculus I
Hello, The pressure P and volume V of an expanding gas are related by the formula PVb=C, where b and C are constants (this holds in adiabatic expansion, without heat gain or loss). Find dPdt if b=1.6, P=12kPa, V=80cm2, and dVdt=20cm3/min. Thus far, I got d(PV)/dt= p(dv/dt) + V...
Friday, April 10, 2015 by Natalie

Calculus
Consider the following function f(x)=x^2/[x^2-9] f(x) is increasing on the interval(s) f(x) is decreasing on the interval(s) f(x) has 2 vertical asymptotes x= f(x) is concave up on the interval(s) f(x) concave down on the interval(s) I've been stuck on these parts for ...
Friday, April 10, 2015 by Ryan kustin

Pre - CALCULUS
Find the x-intercepts (if any) for the graph of the quadratic function. 6x2 +12x+5=0 Give your answers in exact form. Show your work.
Friday, April 10, 2015 by Ciara

Calculus
A road perpendicular to a highway leads to a farmhouse located 6 mile away. An automobile traveling on the highway passes through this intersection at a speed of 55mph. How fast is the distance between the automobile and the farmhouse increasing when the automobile is 2 miles ...
Friday, April 10, 2015 by Nicole

Calculus
Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 7.5 mi^2/hr. How rapidly is radius of the spill increasing when the area is 8 mi^2? I tried using A=(pi)r^2 and dA/dt=2(pi)r(dr/dt) and plugging in 7.5=2(pi)8(dr/dt) but the ...
Friday, April 10, 2015 by Ashley

Calculus
A snowball melts at a rate of 2 cubic inch an hour. When the volume is 36π in^3, how fast is the radius shrinking? V=(4/3)(pi)(r^3)
Friday, April 10, 2015 by Anonymous

Calculus
The outside radius of a thin open-ended cylindrical shell (of height 10 feet) is 12 feet. If the shell is 1 inch thick, use differentials to approximate the volume of the region interior to the shell.
Friday, April 10, 2015 by Anonymous

pre - CALCULUS
The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same heat loss as the given temperature and wind speed. One formula for computing the equivalent temperature is 𝑡 W(t) = {33 − (10.45+10√𝑣...
Thursday, April 9, 2015 by Ciara

pre - CALCULUS
Verify the identity. Show your work. (1 + tan2u)(1 - sin2u) = 1
Thursday, April 9, 2015 by Ciara

pre - CALCULUS
The wind chill factor represents the equivalent air temperature at a standard wind speed that would produce the same heat loss as the given temperature and wind speed. One formula for computing the equivalent temperature is 𝑡 W(t) = {33 − (10.45+10√𝑣...
Thursday, April 9, 2015 by Ciara

pre - CALCULUS
A gas company has the following rate schedule for natural gas usage in single-family residences: Monthly service charge Per therm service charge 1st 25 therms Over 25 therms $8.80 $0.6686/therm $0.85870/therm What is the charge for using 25 therms in one month? Show your work...
Thursday, April 9, 2015 by Ciara

pre - CALCULUS
Verify the identity. Show your work. cot θ ∙ sec θ = csc θ
Thursday, April 9, 2015 by Ciara

Calculus
During a certain epidemic, the number of people that are infected at any time increases at rate proportional to the number of people that are infected at that time. 1,000 people are infected when the epidemic is first discovered, and 1,200 are infected 7 days later. Write and ...
Thursday, April 9, 2015 by Anonymous

Calculus
The number of people that hear a rumor follows logistic growth. In a school of 1500 students, 5 students start a rumor. After 2 hours, 120 students have heard about the rumor. Recall: dy/dx=ky(1-Y/L) and y=L/(1+be^(-kt)) I found the logistic growth equation to be 1500/(1+299e...
Thursday, April 9, 2015 by Anonymous

Calculus
Find the particular solution (solved for y) for the differential equation dy/dx=2x/e^(2y) satisfying y(0)=1.
Thursday, April 9, 2015 by Anonymous

Calculus
A manufacturer has determined that the weekly profit from the sale of x items is given by the function below. It is estimated that after t days in an week, x items will have been produced. Find the rate of change of profit with respect to time at the end of 7 days. P9x) = -x^2...
Thursday, April 9, 2015 by Stacey

CALCULUS
Consider the function f(x)=9x3−4x5. Let F(x) be the antiderivative of f(x) with F(1)=0. Then F(4) =
Thursday, April 9, 2015 by Anonymous

Calculus
Suppose that y=f(x) = sqrt(2x), x>=0 Find a c > 0 such that the tangent line to the curve y = f(x) at x = c has the same slope as the tangent line to the curve y = f^–1(x) at x = c. You get: c = 1/8 c = 1/2 c = (1/8)^(1/3) c = (1/3)^(2/3) c = (1/2)^(1/3)
Thursday, April 9, 2015 by Thomas

Calculus AB
For the function f(x) = sqrt(9-x), which is equal to d/dx(f-1( -1 is the inverse)(x)) a) -2x b) sqrt(x) + 9 c) x^2 + 9 d) 2x e) 9-x^2
Thursday, April 9, 2015 by Thomas

Calculus
For the function f(x) = x^2 - 4x +5, x>= 2, which is equal to d/dx (f-1 this is the inverse)(x)) ? 1/(2y-4) where x and y are related by the equation (satisfy the equation) x=y^2-4y+5 x>= 1 2y-4 where x and y are related by the equation y= = x^2 - 4x +5, x>= 2 1/2x-4 ...
Thursday, April 9, 2015 by Thomas

Calc AB
Remember that f(x) must be one-to-one (only one y-value for each x-value) over the domain where f –1(x)is defined as a function. So, in some cases you must restrict the domain of f(x) so that it's one-to-one. There might be more than one section of domain that's ...
Thursday, April 9, 2015 by Thomas

Calculus
Batman was driving the Batmobile at 90 mph (=132 ft/sec), when he sees a brick wall directly ahead. When the Batmobile is 400 feet from the wall, he slams on the brakes, decelerating at a constant rate of 22ft/sec2. Does he stop before he hits the brick wall? If so, how many ...
Thursday, April 9, 2015 by Meme

Calculus
A rectangular storage container with an open top is to have a volume of k cubic meters. The length of its base is twice its width. The material for the base costs $6 per square meters and the material for the sides costs $10 per square meter.
Thursday, April 9, 2015 by Joseph

Calculus
In a poll of 400 voters in a certain state, 61% said that they opposed a voter ID bill that might hinder some legitimate voters from voting. The margin of error in the poll was reported as 4 percentage points (with a 95% degree of confidence). Which statement is correct? A. ...
Thursday, April 9, 2015 by Scott

Calculus
Joe dealt 20 cards from a standard 52-card deck, and the number of red cards exceeded the number of black cards by 8. He reshuffled the cards and dealt 30 cards. This time, the number of red cards exceeded the number of black cards by 10. Determine which deal is closer to the ...
Thursday, April 9, 2015 by Scott

calculus (please with steps and explanations)
consider the function f that is continuous on the interval [-5,5] and for which the definite integral 0(bottom of integral sign) to 5(top of integral sign) of f(x)dx=4. Use the properties of the definite integral to evaluate each integral: (a) definite integral from 0(on the ...
Thursday, April 9, 2015 by Linda

Calculus
The sun is setting at the rate of 1/4 deg/min, and appears to be dropping perpendicular to the horizon, as depicted in figure 6.2.5. How fast is the shadow of a 25 meter wall lengthening at the moment when the shadow is 50 meters long?
Thursday, April 9, 2015 by John

calculus
karen hits a tennis ball with an initial velocity of 42 feet per second an at angle of 16 degree with the horizontal from a height of 2 feet. she is 20 feet from the net and the net is 3 feet. will the ball go over the net?
Wednesday, April 8, 2015 by BK

calculus
consider the function f that is continuous on the interval [-5,5] and for which the definite integral 0(bottom of integral sign) to 5(top of integral sign) of f(x)dx=4. Use the properties of the definite integral to evaluate each integral: (a) definite integral from 0(on the ...
Wednesday, April 8, 2015 by Linda

calculus
A conical drinking cup is made from a circular piece of paper of radius R inches by cutting out a sector and joining the edges CA and CB. Find the radius, height and volume of the cone of greatest volume that can be made this way
Wednesday, April 8, 2015 by Linda

Calculus
A hot air balloon is 150 ft above the ground when a motorcycle passes beneath it (traveling in a striaght line on a horizontal road) going 58 ft/sec. If the balloon is rising vertically at a rate of 10 ft/sec, what is the rate of change of the distance between the motorcycle ...
Wednesday, April 8, 2015 by Linda

calculus
A conical drinking cup is made from a circular piece of paper of radius R inches by cutting out a sector and joining the edges CA and CB. Find the radius, height and volume of the cone of greatest volume that can be made this way.
Wednesday, April 8, 2015 by Linda

Calculus (urgent help)
consider the function f that is continuous on the interval [-5,5] and for which the definite integral 0(bottom of integral sign) to 5(top of integral sign) of f(x)dx=4. Use the properties of the definite integral to evaluate each integral: (a) definite integral from 0(on the ...
Wednesday, April 8, 2015 by Linda

calculus
A box with a square base is to be constructed with a surface area of 726 square centimeters. 1. Draw a diagram of the box. Label the diagram appropriately with variables. 2. Write an objective equation and a constraint equation (label each one as objective or constraint). 3. ...
Wednesday, April 8, 2015 by Courtney

PRE - CALCULUS
Solve the quadratic equation by the square root property. (2x + 5)2 = 49 A. {-6, 1} B. {0, 1} C. {-27, 27} D. {1, 6} d?
Wednesday, April 8, 2015 by Ciara

PRE - CALCULUS
Evaluate the radical expressions or indicate that the root is not a real number. 3sqrt-4^3 A. -64 B. 4 C. -4 D. not a real number B?
Wednesday, April 8, 2015 by Ciara

Calculus
When production is 1700, marginal revenue is 8 dollars per unit and marginal cost is 6.75 dollars per unit. Do you expect maximum profit to occur at a production level above or below 1700? If production is increased by 50 units, what would you estimate the change in profit ...
Tuesday, April 7, 2015 by Nope

Calculus
A wire 7 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total area of both ...
Tuesday, April 7, 2015 by Nope

calculus
Solve the equation. Give the exact solution. 2*10^(5x-3)+5=17
Tuesday, April 7, 2015 by Michael J

calculus
Find the area under one arch of curve y=cos(x/4). This lesson is plane areas in rectangular coordinates. I don't know how to solve it. Thanks for your help.
Tuesday, April 7, 2015 by Jhun

Calculus
Evaluate dy/dt for 2xy-2x+2y^3=-10 with the conditions dx/dt=-4 x=2 y=-1 dy/dt=?
Monday, April 6, 2015 by Frankzilla

Calculus
Cost: C^2=x^2+98*sq rt of x + 57 Revenue:890(x-4)^2+29R^2=26,100 Find the marginal cost dC/dx at x=4
Monday, April 6, 2015 by Frankzilla

Calculus
Find the rate of change of total revenue, cost, and profit with respect to time. Assume that R9x) and C9x) are in dollars. R(x)=60x-0.5x^2 C(x)=5x+15 x=30 and dx/dt=20 units per day
Monday, April 6, 2015 by Billy the Goat

Calculus
a 14 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 3 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 5 feet from the wall? I got -1.083 when I ...
Monday, April 6, 2015 by Billy the Goat

Calculus
a 12 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 1 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 2 feet from the wall?
Monday, April 6, 2015 by Billy the Goat

Pre-Calculus
Convert from standard to vertex form: (x+5)(x+4) x^2+ 9x + 20 (x+3)^2 + 20 - 9 (x+3)^2 + 11 <------
Monday, April 6, 2015 by Lucina

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Homework Help: Math

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