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May 4, 2015

Homework Help: Math: Calculus

Recent Homework Questions About Calculus

Calculus
F(x) = 3/4x^4 –x^3 -3x^2 + 6x Determine the interval(s) where f(x) is increasing (if any) and the interval(s) where f(x) is decreasing (if any). How do I know where f(x) is increasing or decreasing?
Monday, January 12, 2015 at 7:09pm

Calculus
suppose a car is decelerating at a constant rate of 5 m/s^2 (i.e. its acceleration is -5m/s^2) . If the car has an initial velocity of 25m/s, how far does the car travel before coming to a full stop? So do I try to integrate the acceleration to find the velocity ?
Monday, January 12, 2015 at 4:56pm

Calculus
suppose a car is decelerating at a constant rate of 5 m/s^2 (i.e. its acceleration is -5m/s^2) . If the car has an initial velocity of 25m/s, how far does the car travel before coming to a full stop?
Monday, January 12, 2015 at 4:55pm

Please check my Calculus
1. Find the value(s) of c guaranteed by Rolle’s Theorem for f(x)=x^2+3x on [0, 2] A. c=-3/2 B. c=0, 3 C. Rolle’s Theorem doesn’t apply as f is not continuous on [0, 2] D. Rolle’s Theorem doesn’t apply as f(0) does not equal f(2) E. None of these I got ...
Monday, January 12, 2015 at 10:52am

Please check my Calculus
1. Which of the following describes the behavior of f(x)=x^3-x A. Relative maximum: x=0 B. Relative maximum: x=(1/sqrt(3)); Relative minimum: x=(-1/sqrt(3)) C. Relative maximum: x=(-1/sqrt(3)); Relative minimum: x=(1/sqrt(3)) D. Relative minimum: x=0 E. none of these I got C. ...
Monday, January 12, 2015 at 10:07am

Please check my Calculus
1. Find all points of inflection of the function f(x)=x^4+x^3 A. (0, 0) and (-½, -1/16) B. (-½, -1/16) C. (0, 0) D. (0, 0) and (-¾, -27/256) E. none of these I got A. I found the second derivative and solved for x and plugged in the values to find the ...
Monday, January 12, 2015 at 7:35am

Please check my Calculus
1. Find all points of inflection of the function f(x)=x^4-6x^3 A. (0, 0) B. (0, 0), (9/2, -2187/16) C. (3, -81) D. (0, 0), 3, -81) E. none of these I got D. I found the second derivative and solved for x and plugged values into original function to get points. 2. Find dy/dx ...
Monday, January 12, 2015 at 2:32am

Please check my Calculus
1. Find all points of inflection: f(x)=1/12x^4-2x^2+15 A. (2, 0) B. (2, 0), (-2, 0) C. (0, 15) D. (2, 25/3), (-2, 25/3) E. none of these I got D. I found the second derivative and equaled it to 0 and solved for x. I plugged the x values in to get my points. 2. Find the ...
Monday, January 12, 2015 at 12:32am

Please check my Calculus
1. Given f(x)=-6/x, choose the correct statement A. The graph of f is concave upward on the interval (negative infinity, 0) B. The graph of f is concave downward on the interval (negative infinity, 0) C. The graph of f is concave upward on the interval (negative infinity, ...
Monday, January 12, 2015 at 12:22am

Please check my Calculus
1. Find all critical values for f(x)=(9-x^2)^⅗ A. 0 B. 3 C. -3,3 D. -3, 0, 3 E. none of these I got D. I found the derivative and solved for critical numbers. 2. Find all intervals on which the graph of f(x)=(x-1)/(x+3) is concave upward A. (negative infinity, infinity) ...
Monday, January 12, 2015 at 12:15am

Calculus
Find the absolute maximum and absolute minimum of f on the interval (-4, -1]: f(x)=(x^3+8x^2+19x+12)/(x+4) A. Maximum: None; Minimum: (-2, -1) B. Maximum: (-4, 3); Minimum (-1, 0) C. Maximum: (-4, 3); Minimum: (-2, -1) D. Maximum: None; Minimum: (-1, 0) E. none of these
Sunday, January 11, 2015 at 11:23pm

Calculus
Find the values of x that give relative extrema for the function f(x)=3x^5-5x^3 A. Relative maximum: x= 1; Relative minimum: x=sqrt(5/3) B. Relative maximum: x=-1; Relative minimum: x=1 C. Relative maxima: x=+or- 1; Relative minimum: x=0 D. Relative maximum: x=0; Relative ...
Sunday, January 11, 2015 at 11:08pm

college pre-calculus
4x^2+4y^2-16x-24y+51=0 is the equation of a circle. where is the center of the circle and what is it's radius? A. center (2,3) radius=1/4 B. center (2,3) radius=1/2 C. center (-2,-3) radius=1/4 D. center (-2,-3) radius=1/2
Sunday, January 11, 2015 at 8:14pm

college pre-calculus
if 1-1/x=2-2/x, then 3-3/x=? A. -3 B. -1/3 C. 0 D. 1/3 E. 3 idek how to do it?
Sunday, January 11, 2015 at 8:11pm

ap college pre-calculus
if 3abs(x+4)=8, then x=? A. {-10,2} B. {-2,2} C. {-19,11} D. {-22,-14} which one? idek
Sunday, January 11, 2015 at 8:08pm

college pre-calculus
simplify: (y+1)(y/1-y^2) which answer: A. Y/y-1 B. y/1-y C. y+1/y-1 D. -1 this is what i got y+1/1* Y/1-y^2=-1
Sunday, January 11, 2015 at 8:05pm

college pre-calculus
simplify: 6-y/6/1/6-1/y 6-y/6*6y/y-6= 6y/6=y Is this correct help i need help!! answers: A. -y B. y C. -6/y D. -1/y which one?
Sunday, January 11, 2015 at 8:04pm

college pre-calculus
simplify: square root (4/3)-square root (3/4) A. 2-sqaure root(3)/2 square root (3) B. square root (7/12) C. square root (3)/6 D. 2/square root (3) which answer? this is what i got square root (16/12)- square root (9/12)= square root (7/12)
Sunday, January 11, 2015 at 8:03pm

college pre-calculus help
simplify: 6-y/6/1/6-1/y 6-y/6*6y/y-6= 6y/6=y Is this correct help i need help!!
Sunday, January 11, 2015 at 8:00pm

Calculus
Use the graph of f(x)=x^2/(x^2-4) to determine on which of the following intervals Rolle’s Theorem applies. A. [0, 3] B. [-3, 3] C. [-3/2, 3/2] D. [-2, 2] E. none of these I know what the Rolle's Theorem is but I'm unsure on how you know if the function is ...
Sunday, January 11, 2015 at 2:30pm

Calculus
Let f(x) be a polynomial function such that f(4)=-1, f’(4)=2 and f”(4)=0. If x<4, then f”(x)<0 and if x>4, then f”(x)>0. The point (-4, -1) is which of the following for the graph of f? A. relative maximum B. relative minimum C. critical value D...
Sunday, January 11, 2015 at 1:58pm

Calculus
Let f(x) be a polynomial function such that f(-2)=5, f’(-2)=0 and f”(-2)=3. The point (-2, 5) is which of the following for the graph of f? A. relative maximum B. relative minimum C. intercept D. inflection point E. none of these
Sunday, January 11, 2015 at 1:16pm

Calculus
Which statement is NOT true of the graph f(x)=(x+1)(x-3)^2? A. f has a relative maximum at (⅓, 256/27) B. f has a point of inflection at (3, 0) C. f has an intercept at (3, 0) D. f has a relative minimum at (3, 0) E. none of these For f'(x) I got 3x^2-10x+3 For f&...
Sunday, January 11, 2015 at 12:16pm

Calculus
Consider f(x)=x^2/(x^2+a), a>0. Determine the effect on the graph of f if a is varied. A. Each y value is multiplied by a B. As a increases, the vertical tangent lines move further from the origin C. The graph of the curve is shifted sqrt(a) units to the left. D. As a ...
Sunday, January 11, 2015 at 10:25am

Calculus
Given f(x) = -1/x, find all c in the interval [-3, -½] that satisfies the Mean Value Theorem. A. c= -sqrt(3/2) B. c= +or- sqrt(3/2) C. The Mean Value Theorem doesn’t apply because f is not continuous at x=0 D. The Mean Value Theorem doesn’t apply because f(-&...
Sunday, January 11, 2015 at 2:41am

Calculus
A particle is moving along the x-axis according to the position function s(t)=3t^2-t^3. What is its maximum velocity? A. 1 B. 2 C. 3 D. 4 E. none of these I thought velocity was the derivative but I'm not sure with this problem.
Sunday, January 11, 2015 at 1:34am

Calculus
Find all points of extrema on the interval [0, 2pi] if y=x+sinx (-1.-1+(3pi/2)) (pi, pi) (-1,0) ((3pi/2), 0) none of these I got pi as my critical number but I'm confused with the intervals.
Sunday, January 11, 2015 at 12:57am

Calculus
Find dy/dx for 5x^2-2xy+7y^2=0 I'm getting confused with signs.
Sunday, January 11, 2015 at 12:32am

Calculus
Evaluate using the sum of a finite geometric series: The sum of 2^i on the range from i = 1 to n. Please Help! I don't know how to make the exponent in 2^i = to i-1!
Saturday, January 10, 2015 at 6:32pm

calculus
Please how do i integrate this = ¡Ò (5 x⁶ + 2/x³ ) ? Thanks
Saturday, January 10, 2015 at 4:48pm

Math (calculus)
If y = 2x^3 - 4x and dx/dt = 4, find dy/dt when x = 1. Please show me how to solve this problem with steps.
Saturday, January 10, 2015 at 6:32am

Calculus
Evaluate each telescoping sum: 1) Sum from i = 1 to 100 of (5^i - 5^(i-1)). I know that I could apply the (n(n+1))/2 summation rule to the 5^i part of the question and then plug in 100, but I am unsure what to do for the second half --> -5^(i-1)! Thank you for any help!
Friday, January 9, 2015 at 10:26am

college pre-calculus
what is the equation of lowest degree with real coefficients if two of its roots are -1 and 1+i? A. x^3+x^2+2=0 B. x^-x^2-2=0 C. x^3-x+2=0 D. x^3-x^2+2=0 e. none of the above i dont get it is it (x+1) (1+i)
Tuesday, January 6, 2015 at 6:18am

Calculus
a balloon rises straight up to 5 ft/sec. and a crying child who lost the balloon is standing 40 ft away. how fast does the balloon move away from the child when it is 30 ft above the ground?
Sunday, January 4, 2015 at 8:59pm

calculus
finding first derivative for functions y=x³In(5x)
Saturday, January 3, 2015 at 10:17am

Calculus
∫csc x cot^2 xdx
Saturday, January 3, 2015 at 4:09am

calculus
Y =-( x+2)² - 4 state clearly intercept x and intercept Y
Saturday, January 3, 2015 at 1:07am

Calculus
The function h(x) = x^3+bx+d has a critical point at (2,-4). Determine the constants b and d and find the equation of h(x). I'm very confused and I do not have any idea on what the first step is.
Friday, January 2, 2015 at 3:56pm

Calculus
The function h(x) = x^3+bx+d has a critical point at (2,-4). Determine the constants b and d and find the equation of h(x). Show your work.
Friday, January 2, 2015 at 3:55pm

calculus
this is an exploration in my textbook that we are assigned to do. it basically means we are supposed to use our graphing calculator to help. my calculator won't work for some reason so I'm trying to do it without and cannot figure it out. the question is really ...
Thursday, January 1, 2015 at 4:39pm

Calculus
f(x)= x/(1+x)^2 c) find the intervals of concavity and the inflection points. My answers: f is concave downward on (- infinity, 2) and concave upward on (2, infinity). Inflection point: ( 2, 2/9)
Wednesday, December 31, 2014 at 7:38pm

Calculus
I don't get how you get this part: f' = (1-x)/(1+x)^3 f" = [(-1)(x+1)^3 - 3(1-x)(x+1)^2]/(x+1)^6 = [-(x+1)+3(x-1)]/(x+1)^4 ( I don't understand how you got this!!) = (-x-1+3x-3)/(x+1)^4 = (2x-4)/(x+1)^4
Wednesday, December 31, 2014 at 7:06pm

Calculus
What is the derivative of f(x)=(10-3x)/2• sqrt of (5-x)?
Wednesday, December 31, 2014 at 5:11pm

calculus
I really don't know where to start or go with this question...There aren't any similar examples in my book so if you could walk me through it so I can be prepared for my test - that would be great! Thanks. (a) Approximate √26 by using the linearization of y=&#...
Wednesday, December 31, 2014 at 2:43pm

Calculus
How would I find out what the height of the pile would be after 5 minutes? A machine starts dumping sand at the rate of 20 m3/min, forming a pile in the shape of a cone. The height of the pile is always twice the length of the base diameter. The volume formula for a right ...
Wednesday, December 31, 2014 at 1:35pm

Calculus
f(x)= x/(1+x)^2 a) find the intervals on which f is increasing or decreasing. Is it ....f is decreasing on the intervals (- infinity, -1) and (1, infinity)...f is increasing on the interval (-1, 1)....... b)find the local min and max values of f.. For f(-1) I got undefined... ...
Wednesday, December 31, 2014 at 1:24pm

Calculus
a) find the intervals on which f is increasing or decreasing. Is it ....f is decreasing on the intervals (- infinity, -1) and (1, infinity)...f is increasing on the interval (-1, 1)....... b)find the local min and max values of f.. For f(-1) I got undefined... f(1)=1/4....... ...
Wednesday, December 31, 2014 at 1:49am

Pre-Calculus
How do you solve the equation(800+x)tan33=xtan35?
Monday, December 29, 2014 at 6:34pm

Calculus- Can you help me solve for dr/dt
How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dv/dt , the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we want to find is dr/dt...
Monday, December 29, 2014 at 1:30pm

calculus
A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x^2h cm^3. Find the rate at which the volume of the box is changing when the edge length of the base is 12 cm, the edge length of the base is decreasing ...
Monday, December 29, 2014 at 12:39pm

calculus
A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x^2h cm^3. Find the rate at which the volume of the box is changing when the edge length of the base is 4 cm, the edge length of the base is increasing ...
Monday, December 29, 2014 at 12:28pm

Calculus
evaluate each of the following integral:- I= ∫((x^2+ 1)/(x^4+ 1))dx Y=∫(sinhxcoshx)dx/√(sinhx^4+​coshx^4)
Sunday, December 21, 2014 at 5:52am

Calculus
If 3x^2+y^2=7 evaluate ((d^2)y)/(dx^2) when x=1 and y=2
Sunday, December 21, 2014 at 3:27am

calculus
use implicit differentiation to find y=(x+8)^(3x)
Sunday, December 21, 2014 at 3:21am

Calculus
Determine the equation of the normal line y=x^2+5 at the point (2, 9) I got y= 4x+1
Sunday, December 21, 2014 at 3:12am

Calculus
Determine the intersection, if any, of the planes with equations x + y - z + 12 = 0 and 2x + 4y - 3z + 8 = 0. I have no clue where to even begin. If someone could help and give me the steps to complete it, that would be greatly appreciated. Do I have to first simplify the ...
Thursday, December 18, 2014 at 4:35pm

Calculus
Determine the intersection, if any, of the planes with equations x + y - z + 12 = 0 and 2x + 4y - 3z + 8 = 0. I have no clue where to even begin. If someone could help and give me the steps to complete it, that would be greatly appreciated. Do I have to first simplify the ...
Thursday, December 18, 2014 at 3:35pm

Pre-Calculus
Can you create another pair of six-sided dice (different from the standard dice) that produces the exact same probabilities of the sums two through twelve appearing? The only rule is that the numbers on each face must be positive integers. I've been attempting this problem...
Wednesday, December 17, 2014 at 11:36pm

Calculus
find the absolute extrema for f(x)= (5-x) with a closed interval of -1,2
Wednesday, December 17, 2014 at 10:21pm

AP AB Calculus
Linear approximation: Consider the curve defined by -8x^2 + 5xy + y^3 = -149 a. find dy/dx b. write an equation for the tangent line to the curve at the point (4,-1) c. There is a number k so that the point (4.2,k) is on the curve. Using the tangent line found in part (b), ...
Wednesday, December 17, 2014 at 9:16pm

calculus honor
If y = 2x3 – 4x and , find when x = 1. Give only the numerical answer. For example, if = 3, type only 3.
Wednesday, December 17, 2014 at 1:53pm

calculus honor
A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x2h cm3. Find the rate at which the volume of the box is changing when the edge length of the base is 4 cm, the edge length of the base is increasing at ...
Wednesday, December 17, 2014 at 1:52pm

calculus
The height of a cylinder with a fixed radius of 6 cm is increasing at the rate of 3 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 20cm.
Wednesday, December 17, 2014 at 1:52pm

calculus
The area A = πr2 of a circular puddle changes with the radius. At what rate does the area change with respect to the radius when r = 5ft?
Wednesday, December 17, 2014 at 1:51pm

Calculus
Average value of f(x) = e ^ 4xsquared on the interval [-1/4,1/4]
Tuesday, December 16, 2014 at 10:15pm

calculus
No idea where to start The cost in dollars of producing x units of a particular camera is C(x) = x2 - 10000. (10 points) Find the average rate of change of C with respect to x when the production level is changed from x = 100 to x = 101. Include units in your answer. Find the ...
Tuesday, December 16, 2014 at 9:24pm

calculus
Do I just put in 3 for t? A ball is dropped from a tower 550 meters above the ground with position function s(t) = 4.9t2 + 550. What is the velocity of the ball after 3 seconds?
Tuesday, December 16, 2014 at 8:58pm

Calculus
Given the function f(x)= x√(x+3), Indicate the domain of f(x): ……………… ​3;……… What are the x – intercepts of the graph of f(x)? POINTS! ……………… ​3;…………. ...
Tuesday, December 16, 2014 at 7:11pm

calculus
A 25-ft ladder rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 0.18 ft/sec, how fast, in ft/sec, is the top of the ladder sliding down the wall, at the instant when the bottom of the ladder is 20 ft from the wall?
Tuesday, December 16, 2014 at 1:31pm

Calculus
Find the derivative of 1/(1+(x-3)^2) Steps would be appreciated.
Monday, December 15, 2014 at 9:07pm

calculus
there are no examples of this type of problem in my book so if you could help walk me through it - that would be extremely helpful. thanks ahead of time. Find the extreme values of the function on the interval and where they occur. 4) F(x)=³√(x); -3</=x</=64 A...
Monday, December 15, 2014 at 12:43pm

Calculus
Use linear approximation to approximate f(0.8) given f(x)=2x^3-3x+1 I'm not sure how to do it without a point given.
Monday, December 15, 2014 at 1:10am

Calculus (math)
The volume of the solid obtained by rotating the region enclosed by y=1/x4,y=0,x=1,x=6 about the line x=−2 can be computed using the method of cylindrical shells via an integral. it would be great if you can just even give me the function inside that I need to take the ...
Monday, December 15, 2014 at 1:02am

Calculus (math)
The velocity function (in meters per second) for a particle moving along a line is given by v(t)=t3−5t2. Find the displacement and the distance traveled by the particle during the time interval [-1,6]. Distance traveled = ?? I got 2089/12m as answer but it was incorrect ...
Sunday, December 14, 2014 at 11:45pm

Calculus (math)
A bacteria culture grows with constant relative growth rate. The bacteria count was 784 after 2 hours and 117649 after 6 hours. What is the relative growth rate? What was the initial size of the culture? Find an expression for the number of bacteria after t hours. Find the ...
Sunday, December 14, 2014 at 10:26pm

Calculus (math)
Warfarin is a drug used as an anticoagulant. After administration of the drug is stopped, the quantity remaining in a patient's body decreases at a rate proportional to the quantity remaining. Suppose that the half-life of warfarin in the body is 35 hours. Write a ...
Sunday, December 14, 2014 at 10:23pm

Calculus (math)
A tank in the shape of an inverted right circular cone has height 7 meters and radius 4 meters. It is filled with 5 meters of hot chocolate. Find the work required to empty the tank by pumping the hot chocolate over the top of the tank. The density of hot chocolate is δ=...
Sunday, December 14, 2014 at 10:20pm

Calculus (math)
A group of engineers is building a parabolic satellite dish whose shape will be formed by rotating the curve y=ax2 about the y-axis. If the dish is to have a 8-foot diameter and a maximum depth of 2 feet, find the value of a and the surface area (in square feet) of the dish.
Sunday, December 14, 2014 at 10:17pm

Calculus (math)
Consider the area between the graphs x+3y=35 and x+5=y2. This area can be computed in two different ways using integrals
Sunday, December 14, 2014 at 9:51pm

Calculus
Show that Rolle's Theorem applies to the given function for the given values of x: x=-1 and x=4 for f(x)=3x-x^2+2.
Sunday, December 14, 2014 at 9:48pm

Calculus
Consider the function y = 3x5 – 25x3 + 60x + 1. Use the first derivative test to decide whether this function has a maximum at x = 1
Sunday, December 14, 2014 at 9:47pm

calculus
Given f(x,y,z)=<y,z^2-x,x> use stokes theorem to determine the flux integral curlF dot ds, where S is the graph of z=9 - x^2 - y^2 for z>=0 , oriented by the upward normal. please help!
Sunday, December 14, 2014 at 9:26pm

Calculus
Let f(x) be a polynomial function such that f(-2)=5, f'(-2)=0, and f"(-2)=3. The point (-2,5) is a(n)____of the graph f. A. Relative maximum B. Relative minimum C. Intercept D. Point of Inflection E. None of these
Sunday, December 14, 2014 at 8:56pm

Calculus
Use linear approximation to approximate f(0.8) given f(x)=2x^3-3x+1
Sunday, December 14, 2014 at 8:04pm

AP Calculus
The management of a large store has 1600 feet of fencing to fence in a rectangular storage yard using the building as one side of the yard. If the fencing is used for the remaining 3 sides, find the area of the largest yard possible.
Sunday, December 14, 2014 at 8:00pm

Calculus
Find the x-values where f(x)=x^4-8x^3 attains a relative minimum, relative maximum, and inflection points, if any. Justify your answers. My derivative test didn't seem right.
Sunday, December 14, 2014 at 7:58pm

Calculus
Show that Rolle's Theorem applies to the given function for ht eg oven values of x: x=-1 and x=4 for f(x)=3x-x^2+2
Sunday, December 14, 2014 at 7:54pm

Calculus
A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? Is the answer 0.0932ft/s? I don't see that it is ...
Sunday, December 14, 2014 at 7:39pm

Calculus
A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat. If the rope is pulled in at a rate of 1m/s,how fast is the boat approaching the dock when it is 8 m from the dock?
Sunday, December 14, 2014 at 6:19pm

Calculus
A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? (b) At what rate is his distance from third base increasing...
Sunday, December 14, 2014 at 6:16pm

Calculus
A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? (b) At what rate is his distance from third base increasing...
Sunday, December 14, 2014 at 5:50pm

calculus
The graph of a function f is shown. Use the differential equation and the given point to find an equation of the function. dy/dx=4x+(9x^2/(3x^3+1)^(3/2)) and the point (0,2) using the substitution method of integration.
Sunday, December 14, 2014 at 1:10pm

Calculus 1
A woman at a point A on the shore of a circular lake with radius r=4 wants to arrive at the point C diametrically opposite A on the other side of the lake in the shortest possible time. She can walk at the rate of 10mph and row a boat at 5mph. What is the shortest amount of ...
Saturday, December 13, 2014 at 10:09pm

Calculus
Find the length of the entire perimeter of the region inside r=15sin(theta) but outside r=1. I am not sure how to start the problem
Friday, December 12, 2014 at 6:02pm

Calculus
My question: An equation of the line tangent to the graph of f(x) = x(1 - 2x)3 at the point (1, –1) is?? My answer: y = –2x + 1
Thursday, December 11, 2014 at 9:11pm

Math-Calculus
Find the point on the line -2x + 4y + 3 =0 which is closest to the point (-2,1). Note: I have been struggling on this for hours!
Thursday, December 11, 2014 at 8:14pm

calculus
after t seconds the position of a particle which is moving along a straight line is x=2t^3-9t^2+12t+6, when is the acceleration zero? determine the velocity at that time.
Thursday, December 11, 2014 at 2:58am

Calculus
Hi! I need help with this problem: For 0(smaller or equal to) t (smaller or equal to) 9, a particle moves along the x-axis. The velocity of the particle is given by v(t)= (sin pi/4 t). The particle is at position x= -4 when t=0. a) For 0 (smaller or equal to) t (smaller or ...
Thursday, December 11, 2014 at 1:28am

calculus
lim(x tends to 3) (square root(x^2+7) -4) divided by (square root(x^2-8) -1) Pls help and list the steps. Thx
Wednesday, December 10, 2014 at 10:11pm

Calculus
If the y-coordinate at each point of inflection on the curve y=e^(-x^2) is 1/e^a, then a = ?
Wednesday, December 10, 2014 at 7:23pm

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