# Calculus (Answer Check)

86,783 results, page 86

### math

do not know how to get answer on kathleen spent $30.50 on two shirts. One shirt cost $3.50 more than the other. How much did each shirt cost?How do you get the answer for X +X+3.50 = 30.50. Trying to explain how to get answer to a 5th grader.

### Math

[Note: I did the first half of this question by myself and got it correct. But I got the second half wrong] Question: How much work does the electric field do in moving a proton from a point with a potential of +160 V to a point where it is -45 V ? Express your answer in ...

### Pre-Calculus

Driving down Bald Mountain in Wyoming, Bob dean finds that he descends 1600 feet in elevation by the time he is 2.5 miles (horizontally) away from the high point on the mountain road. Find the slope of his descent (Hint: 1 mile = 5280 feet) After converting the miles to feet I...

### History

I Need help with this social studies! 1. when the roman government began to persecute christens under Nero, A.Christianity almost disappeared. B. Christians had to cremate their dead.***** C. Jews hid Christianity was outlawed 2. which roman emperor ended the persecution of ...

### Chemistry -Dr. Bob

Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by the surroundings), calculate: a) the PV work...

### english

Reactionary : Progress:: a. misanthrope : people b. zealot : revolution c. virtuoso : perfection d. laggard : iniquity e. charlatan : diversity d? Decorum : Conventional:: a. innovation : variegated b. depravity : surreptitious c. subjugation : desultory d. hedonism : self-...

### thermodyn. please check work

What is the sign of heat(Q), Work(W), or Temperature for these following situations. Say if it's +,-, or 0. 1)You hit a nail with a hammer: +W, Q=0, T=0 2)You hold a nail over a Bunsen burner: Q=+Q, Temp:constant, W=0 3)You compress the air in a bicycle pump by pushing down on...

### math

jen can run at 7.5 m/s and mary at 8.0 m/s. on a race track jen is given a 25 m head start, and the race eds in a tie. how long is the track? let x = distance run by jen. x + 25 = distance run by mary. time jen = d/r = x/7.5 time mary = d/r = (x+25)/8 Since they arrived at the...

### Calculus

Find the derivative w/ respect to x: g(x) = ln(sec(x))

### Calculus

find anitderivative of 30sqroot(x+4) What is the derivative of (x+4)^(3/2) ?

### pre- calculus

how do you find the root(s) of the equation x^2+3x-4=0

### calculus

how can I calculate this deriivative: 1/(sin(x-sinx))?

### Calculus

Problem 49. Find the critical values f(x) = (4x^2 - 9) / x

### Calculus 2

Find the length of the spiral r=a(Theta) on [0,Pi]

### calculus

If 4x^(2)+5x+xy=4 and y(4)=-20, find y'(4) by implicit differentiation. I got y'=(-8x-5-y)/(x)

### calculus

calculate the indefinte integral (x^2+2x+3)/(sqrt of x)

### Calculus

If A=125e^-kt and A=200 when t=3, find the value of k.

### Calculus

Find the coefficient of the x^2 term in the expansion of (3x - (2/x^2))^8

### Math

Find dx/dy by implicit differentiation x^2y+y^2x P.S: It's calculus

### Calculus III

(24cos(8x))/(1+(sin^2(8x))) Integrated from (pi/16,-pi/16

### Calculus

Average Value of a Function f(x) =(1)/(X-3)^2 in the interval [0,2]

### calculus

find the conjugate on z times w if z=[3,120] and w=[-1,-15]

### calculus

find the (conjugate of z) times (w) if z=[3,120] and w=[-1,-15]

### calculus

How would you sketch the graph of E(v)=aLv^3/v-u

### CALCULUS

For the piecewise function, find the values g(-8), 8(3), and g(8). g(x)={X+6,FOR X<=3 7-x, for x>3

### Pre-calculus

Describe the end behavior of f(x)=2x^4-5x+1.

### Calculus

I need help finding the vertical asymptote of f(x)= 1-x -------- 2x^2-5x-3

### calculus

Factor the given equation: p(x) = x^3 - 25x

### calculus

Evaluate the following limit lim x^2 + 3x - 40 x-->5 ------------- 3x + 10 - x^2

### Calculus

How is 2cos(4x) the derivative of f(x)=sin(2x)cos(2x)?

### Calculus

If d/dx(f(3x^5))=9x^4, find f'(x) I can't figure out what this means

### Differential Calculus

Find the limit of (10^x - 5^x)/x as x approaches 0

### Calculus

Find dy/dx by implicit differentiation. sqrt(3 x+y)=2+x^2y^2?

### calculus

find the critical numbers of the function 2t^(2/3)+t^(5/3)

### Calculus

How do you integrate square root of (4-x^2) ? Pleasee help!

### Calculus

series: n=1 to n=inf of 6/(n^3-4) convergent or divergent?

### calculus

Let f and g be differentiable everywhere. If g is the inverse of f and g(-2)=5 and f'(5)=-1/2, then g'(2)=? PLEASE HELP! Thanks

### multivariable calculus

int (30y1y2)dy1 ?

### calculus

the second derivative of y for the point (-1,1) for the equation x^2y+3y-4=0

### calculus

implicit differentiate this equation in terms of y x^2y^2=(y+1)^2(4-y^2)

### calculus

find dy/dx of xsiny+cos2y=cosy

### Calculus

If f(x) and g(x) are continuous functions with f(6)= 3 and limit as x approaches 0 of (5f(x) - g(x)) = 4, what is g(6)?

### Calculus

Washer Method: y=x^3, y=1 ,x=2 aroud the Y axis

### Calculus

I am lost. Find dy/dx by implicit differentiation. 1) 5y-2x^2=x-3

### calculus

how do you find the x and y intercepts of an equation? i forgot.

### calculus

Find a formula for the inverse of the function f(x) = (4 x-1)/(2x+3)

### calculus

evaluate: integration of x^2 (square root of (1-2x^3))dx

### Calculus

Evaluate the integral: sin^2(5x)cos^2(5x)dx

### calculus

integrate log base 10 x / x dx i don't understand this

### calculus

sec^2(x) / (1+2tanx)^2 dx please help me with this integration thank you

### calculus

what are the steps and explanations for differantiating this function? y = ln(e^-x + xe^-x)

### Calculus

How does ln(e^-x) = -x I know that the derivative of ln is 1/x so it would be 1/(e^-x) but how does that simplify to -x? I am confused....

### calculus

how do you take a limit of [ln(1+e^n)]/2n as n goes to infinity?

### calculus

how do you find the limit as n approaches infinity of n/(2^n + n)?

### Calculus

How to integrate with position, velocity and accelleration

### Calculus

Evaluate the limit. lim x-->infinity 5x+6/6x^2-3x+7

### Calculus

f(x)=sin^(7)x The 7 is an exponent and the x is not. Find the derivative.

### calculus

find the max point on the graph f(x) = -1/3x^3 + 3x^2 - 5x

### calculus

Differentitate y = e^x^2 -^5^x +^4 so far i have dy/dx = 2x e^(x^2) - 5^(x)* ln 5 + can you help with the rest?

### calculus

simplify the following: 2ln(x-3)+ln(x+2)-6ln(x)

### Pre Calculus

log(log10^10,000)

### Calculus

Using the first of these limits, find f'(3) if f(x)=4x^2+4x-2

### calculus

find the first derivative of f(x)=(3-4x)^5tan(2x^2-x-1)

### Calculus

The expression e^x / e^(4+x) can be written as e^f(x), where f(x) is a function of x, find f(x)?

### calculus

Find the limit. lim (5u^4+7)/(u^2-2)(2u^2-1) u-->infinity

### calculus

Determine whether f '(0) exists. f(x) = {xsin(10/x) if x can not = 0 0 if x=0

### Calculus

[Inverse Functions] f(x)= 5cos(x)sin^(-1)(x) f'(x)=?

### calculus

Differentiate the following function. y = (5 x^2 + 7 x + 6)/sqrt(x)

### calculus

If 5x^2+3x+xy=2 andy=-12, find y'(2) by implicit differentiation.

### Calculus (derivatives)

Find the derivative of cos^2(4x)

### Calculus

What is the antiderivative of f(x)= 2x^8 + 10x^5 - 8x^4 - 4? I got (2/9)^9 + (10/6)^6 - (8/5)^5 - 4x but it's not right.

### Calculus

The linear approximation at x = 0 to sin (5 x) is A + B x. Find A and B?

### calculus

find the derivative of y=sqrt of arctan x

### calculus

what is the the derivative of the absolute value fuction x-3

### Calculus

3 ⌠ 2⌡ (2x^2+5) / x^2 dx =? I got 1.66 but it was wrong.

### Calculus

Find the area enclosed between f(x)=0.4x^2+5 and g(x)=x From x=-5 to x=8

### calculus

find the derivative of f(x)=cot(3x)csc^2(3x)

### calculus

For a function f, let f*(x)=lim (f(x+h)-f(x-h))/h h->0 Determine f*(x) for f(x)=cos(x)

### Calculus

Express the four fourth roots of 1/2 + ã3/2 i

### Calculus

Express the following in Sigma notation 2+8+18+32+50+72

### Calculus

Express the following in Sigma notation 2+8+18+32+50+72

### calculus

U-Substitution 1. 3x(sin^2((3x^2)+1)cos((3x^2)+1)dx 2. (x^3)(sqrt((3x^2)+1)) dx u = ((3x^2)+1) then?

### Calculus

The total area enclosed by the graphs of y=6(x^2)–(x^3)+x and y=(x^2)+7x is ..

### Calculus

lim x->9 1 1 - - - 3 square root of x ___________________________ x-9

### calculus

Deternime the instantaneous rate of change at x=2 for: y=x-2x^3

### calculus

please help! Find the derivative of f when f(x) = 5 tan^-1 (e^-x) + 6e^x

### calculus

Use the principles definition to find dy/dx for: y= -3x^2

### calculus

lim sinx as x approaches pie/r

### calculus

lim (-x+10)/(x©÷-100) x¡æ10 is this correct? 1/20

### Calculus

Evaluate the indefinite integral. (e^7x)/(e^14x+16)dx

### calculus

differentiate y=x^2x. show all work

### Calculus

Find the total derivative dz/dt, given z=f(x,y,t) where x=a+bt and y=c+dt

### calculus plzz help!!!

Differentiate the following function. ((8x^1/2)+(9/2x^1/3))^2

### calculus

find derivative of (8sqrt(x)+(9/2root3(x)))^2

### calculus

Find f' for each of the following where g and k are differentiable functions: f=(g^3)(k^2)

### calculus

find f' for each of the following where g and k are differentiable functions. F= g{sq.rt. of k(x^2)}

### calculus

find the derivative of y= 3-secx/tanx

### calculus

Given F(x) = ax+3, x>5 8 , x=5 x^2 + bx + a, x<5 Find a and b so that f(x) is continuous everywhere.

### calculus

How do you solve the initial value problem? (dy/dx)-2y+4=0, y(1)=4