# CALCULUS - need help!

53,895 results

### Calculus

What is the simplest solution to the Brachistochrone problem and the Tautochrone problem involving calculus? (I know that the cycloid is the solution but I need a simple calculus proof as to why this is the case)

### Calculus, bobpursley!

This has to do with my last Calculus problem. I need help on it..The part I replied to after you answered the question.

### calculus

I need help with this calculus problem. H(S)=S/(1+S) If F 1/2, -1/2 & (a+1)? I can't figure out what this mean /?

### Calculus AP need help!

Use Part 1 of the Fundamental Theorem of Calculus to find the derivative of the function. If f(x)= ∫(4,x^3)√(t^2+10) dt then f '(x).

### Calculus

I need to take a college calculus class. Can someone direct me to a site which might help me get a good start? Thanks in advance.

### Calculus Please Need Urgent3 :/

Find the derivative of the following function using the appropriate form of the Fundamental Theorem of Calculus. F(x)= (s^2)/(1+3s^4)ds from sqrtx to 1 F'(x)=? Thank you so much guys!

### Calculus

How do you simplify vectors? 1)AB + BC + CD 2) BC - FE - BA + DE - DC Calculus - Steve, Tuesday, September 22, 2015 at 11:39pm AB+BC = AC so, AB+BC+CD = AD BC-DC = BC+CD = BD See if you can use that idea to rearrange +/- terms so the ends line up in order Calculus - Anonymous...

### Calculus

So,y(t) = 2.5e^-t cos2t I need to find the derivative, which is y'(t)= -2.5e^-t(2sin 2t +cost 2t) . And now I need to find t when y'(t) = 0 (I know 2.5 e^-t is never zero.) I need to use trigonometry identity to find it ?

### Calculus

Need an answer to this Calculus Question. I keep getting this type of question wrong. Thanks. Differentiate the Function: y = (3x-1)^2(2-x^4)^2 y =

### calculus

Please help. I need ( with details) how to differentiate with the chain rule f(x)=(x^2-6x+23)^3/2. I need to

### calculus

I need help simplifying this problem. f(x)=x^4/5(x-4)^2 f'(x)=x^4/5*2(x-4)+(x-4)^2*4/5x^-1/5 it is suposed to end up as this: 1/5x^-1/5(x-4)[5*x*2+(x-4)*4] but how do i get it to there? I need to see all the steps and how to get them. Thanks

### Calculus

I need help with these two review calculus problems for my final exam. What is the derivative of a). (5x^2+9x-7)^5 b). Lne^x^3 For a. I got 50x+45(5x^5+9x-7)^4 For b. I got 3x^2 Can you verify please?

### calculus

I need to find the critical number of 4x^3-36x^2+96x-64 by factoring. Basically I need to know the zeros.

### Calculus

I need help with integrals and I need help with the problem. Integral of 4/sqrt(x)dx

### Calculus - Urgent!!!

In case this looks familiar, yes, it is a repost. I really need help. Find the anti-derivitive of f(x)= x^3(x-2)^2. Multiple choice gives me the options: A: 1/6 x^6 - 4/5 X^5 + x^4 + C B: 1/6 x^6 - 4/5 X^5 + 1/4 x^4 + C C: x^6 - X^5 + x^4 + C D: x^5 - 4x^4 + 4x^3 + C I got as ...

### Calculus

Sorry, I need more help! I am reallly struggling with Euler's method, and here's a problem I need help on: y'=2y + sin(x), y(0)=0, dx=0.1, the interval is 0 to 1, and f(x)= [e^(2x)-2sin(x)-cos(x)]/5

### Calculus

Hi there, I need help with composition of functions. I need to find fog, gof, gog, and fof and their domains for the following: f(x) = square root of 2x +3 g(x) = x^2 + 1 if someone can help me asap that would be so great!

### calculus

i need to find the derivative using chain rule and show steps: y= (x) / ((x^2)-1)^(-1/2) and is it possible to have free tutoring online like through a chatroom? i am in need of help

### calculus

Need help with the following proof: prove that if lim x->c 1/f(x)= 0 then lim x->c f(x) does not exist.I think i need to use the delta epsilon definition i am not sure how to set it up.

### CALCULUS!!! tangent lines

If f(2)=4 and f'(2)=3, use the line tangent to the graph of f at x=2 to find a linear approximation for f(1.992) HELP! The only one I need, I need a Genius!!!!

### Pre-Calculus

convert to the alternate form to exponential form. a) 5^4=625 b) e^x=y c) log.001=x I really need help on these problems i have no idea how to do it? pls help me i need to study for it on my exam.

### Calculus

A curve is defined by the parametric equations: x = t2 – t and y = t3 – 3t Find the coordinates of the point(s) on the curve for which the normal to the curve is parallel to the y-axis. You must use calculus and clearly show your working, including any derivatives you need...

### Calculus i need help plz plz

Integrate:Sinxcosx/a^2cos^2(x)+b^2sin^2(x))dx??? plz i need the full working too hard for me

### Calculus i need help plz plz

If y=ws^3/d^4 find the % increase in 'y' when 'w' increases by 2% and 's' decreases by 3% and 'd' increasee by 1%...... There a little error in the first question i post here it is plz i need the working and explanation

### calculus

Sorry to post this again, but I am still unable to understand it and need help. Please help.1) Using 3(x-3)(x^2-6x+23)^2 as the answer to differentiating f(x)=(x^2-6x+23)^3/2, which I have been able to do, I need to find the general solution of the differential equation dy/dx...

### Calculus

I need some help with this Calculus problem. A bacteria population starts with 500 bacteria and grows at a rate of r(t) = 548e^6.5t bacteria per hour. A. Determine the function P(t) which gives the population at time t. C. How long does it take the initial population to triple...

### Pre-Calculus/Calculus

I am too embarassed to ask this Calculus (really pre-calculus) question in tutoring, because I know I should know. Is the inverse of f(x)=3x-1 actually f(x)=1/3x+1? How do I find it? What if it asks the same equation replaced with f to the -1 power (x)? I think I know how the ...

### Calculus Graph help!!!

I need help with a calulus graph and figuring out its equation but it wont let me post the picture of the graphs here. so will someone who understands Calculus and their graphs super well please email me k m k underscore horse lover at hot mail dot com. no spaces and an actual...

### integral calculus

(x^4+6x^3-x^2+2)dx need help

### calculus?

Hello can u help? I need a solution to calculus problem I have $500.00 to spend on fencing for a garden. The fence for the street side costs $30.00 per foot and the other three sides cost $10.00 per foot. what dimensions will give you a rectangle for the largest possible area...

### Calculus

need answer to find dy/dx y=e^2x+3*e^x-1

### calculus

Need help for calcul: ( 1/2 ( -1 + i√3 )) ^2 thanks for your help

### Calculus AP need help!

antiderivative. find f. f'(x)= 3x^(-2), f(1)=f(-1)=0

### Calculus AP need help!

antiderivative. find f. f'(x)= 3x^(-2), f(1)=f(-1)=0

### Calculus

I need to integrate ((e^-x)^2 - (-ex)^2)dx Can someone help?

### Calculus

Need help with a few questions

### Pre-Calculus

How do I solve these equations? I need to create an equation given the characteristics? I have to be able to graph a parabola but first I need help solving this. 1.Focus (1.5,1); opens right; directrix x=0.5 2.Focus (1,4);opens down; contains (-3,1)

### Finite Math

Fifty percent of students enrolled in calculus class have previously taken pre-calculus. Thirty percent of these students received an A for the calculus class, whereas twenty percent of the other students received an A for calculus. Find the probability that a student selected...

### Maths (Calculus)

A current i = 50sin 100πt mA flows in an electrical circuit. Determine, using integral calculus, its a) Mean Value b) RMS Value each correct to 2 decimal places over the range t = 0 to t = 10 ms I need to do this two way so I was thinking of using the trapezoidal rule and...

### Integral Calculus

A jeepney's velocity over time in ft/sec as it moves along the x-axis is governed by the function v(t)=3t^2-10t+15. If the jeep's position at t= 1 second is 8ft, what is the total displacement made by the jeepney from t=0 to t=5sec? please I need help, i just need the idea on ...

### Calculus

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

### Calculus

Need the answer to find dy/dx y=(1+cos^4(t/12))^3

### Calculus

Need help with this complex number equation. 8-3i/-4-6i=

### integral calculus

ʃ (e^x – 4e^-x/e^x) dx need help...thnks

### integral calculus

ʃ (e^x – 4e^-x/e^x) dx need help...thnks

### math-calculus

|2x-3|-|2x+5| = 0 i please need helps with this.

### math-calculus

|2x-3|-|2x+5| = 0 i please need helps with this.

### Calculus grade 12

hi i need help differentiating these.. 1. y = cos(3x^2 + 2x) 2. y = ln(3x^2 + 5) thank you

### Calculus

I need help finding the derivative of √3x/(x^2-4) at x=3

### Calculus

Hi! I need help finding the derivative of this function. f(x)= ln [(x(x-1))/(x-2)] Thank you.

### Calculus

Find ¡Ò[dx/(x-2)(x+3)(x-4)] this is really confusing and I need help with it.

### Calculus i need help

Find dy/dx if x^2.y+sin(xy)+y^4.x^2+3xy=5???

### Calculus need help

Dy/dx=x+x^3/y plz show your work

### Calculus help!!!

X^2y+sinxy=e^xy i need solution plz

### Calculus

What is the use of Calculus? How is it use in jobs? What jobs use Calculus? Calculus is used in engineering, economics, any physical science, and in business (e.g., actuary studies and statistics).

### calculus

f(x)=(y+a)and b=the limit as y aproches 2+f=1000. I need to know what y and a equal.

### Business Calculus

I need help with: r(x)= 4/5x^2 + 8x + 15 What do you do with the 4/5X^2? I know that (x+3) and (x+5) is the factoring for x^2 + 8X + 15 but have no clue what to do with the 4/5.

### calculus

i need a real life application on parabola.

### calculus

Need help asap! what is the limit as x approaches 0 of -x/tan(3x) ?

### calculus

Hi i need help for calcul with a Moivre's theorem: ( 1/2 ( -1 - i√3 )) ^3 thanks for your help

### calculus

I need help finding the derivative of (x^2+sinx)secx

### pre-calculus

I need help with soving this problem. G(u) =4-3u-u^2; Find G(-2u)

### calculus

Given g(x) = (x + cosx)/(e^x - 2x^3 + 5). Find g'(x). Do not need to simplify.

### 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!!

### calculus i need help also

If y=2x^2-21x^2+60x+6 what is the value of x? dx^2/dy^2=0

### Calculus i need help

(Cosx)^y=x^siny find dy/dx at point pi/(4,0)

### Calculus, Really need help!

Compute d/dx(f(g(x))) -where f(x)= square root of x -and g(x)=x^2+7

### Calculus: need clarification to where the #'s go

A particle is moving along the curve y= 2 \sqrt{4 x + 4}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant. *I just need step by ...

### Calculus

Find the minimum value of the following function: h(x)= x-(12(x+1)^(1/3) -12) on the interval [0, 26] Honestly, I have found by graphing that the minimum value is at the coordinate point (9,-3), but I need to do this in a way that uses a more "calculus-like" method if you ...

### Calculus

dP/dt = k(P-a) dP/dt = kP-ka dP/P = k-ka is this right so far? was i supposed to distribute??? what do i need to do next???

### calculus i need help please

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

### Calculus, need help again...

If the function f is defined by f(x)=x^2-2x, find limit h->0 (f(3+h)-(f(3-h))/2h

### Calculus

i need help finding area under curve of:2y=sqrt(3x),y=4, and 2y+1x=4

### Calculus

Take the derivative of the following functions. You do NOT need to simplify. h(x)=(6x^3+2x)/(x^2-3x+5)= F(x)=(5x^2+1)(3x-2) =

### Calculus

f(x)= 6ln(2x+7ln(x)) I need to find the first derivative.

### Calculus

Find the antiderivative of (sqrt(x)+3/x-2e^(x))dx. Need steps so I can follow. Thanks

### calculus

i need help with proving five steps of l hospitals rule for (ex^2-1)/x

### calculus

Please i need help with this. Find the area bounded by the curves y0…5 - 4x = 0, 2x - y - 4 = 0

### Calculus

I need help I have to submit work at 12 est time

### Calculus

f(x)=[sqrt((x-68)^2 + x^3-116x^2-417x+267460)] - 10 To find the minimum value of we need to check the value at the following three points (in increasing order). (You will need to use a numerical method, like Newton-Raphson to find one of these points.) x1=? x2=? x3=?

### calculus

need help in below question. Thanks. A man runs round a circular track at a constant speed. Would like to know how to drawn locus of the points representing the magnitude ‘d’ of the displacement of the man from the starting position against time ‘t’ , during one lap of...

### AP Calculus BC Resources

Hi there, I was hoping if any one was familiar with any sites that have printable integration/differentiation packets? I'm hoping to use them for everyday practice. I skipped Calculus AB and need a little help. I love packets so if there are any out there (hopefully with ...

### Calculus

Hi there I am having some troubles trying to do my calculus homework and I really need help trying to do this problem from my homework: Set up the problem and do not solve: The mass of the solid bounded by the surfaces 2x^2 + 2y^2= 9, z=0, z=3 with density function p(x,y)= x^...

### Calculus

A fully plane has a constant acceleration while moving down a runaway. the plane requires .7 mile of runaway and a speed of 160 miles per hour in order to lift off. what is the planes accelearation? i need the formula cause the one i have doesnt work cause i need time

### calculus

f(x)=12x/sinx+cosx find f'(-pie) anyone know the answer!!! need help!

### calculus

2x^3+3x^2-12x-7 the absolute maximum. I need help because it seems no one else in my class knows how to.

### calculus

sqrt(x^2 - 9) / x I need to solve this using the definition of a derivative [f(a+h) - f(a)]/h I can't seem to get it :\

### Pre-Calculus

Need help with the following along with all steps. Find y" for y = 3x + 4/x

### integral Calculus

ʃ(1-sin A)^2 cos A dA please help.i don't know how to solve this.i need your help

### calculus/derivatives

I need to find the derivative and can't do them when they are raised to powers? Thank You. m(x)x^5 - 5x^3+7x -4)^10 (4x^9 +19)^23 this on is tuff!

### Pre-Calculus

I need help sketching the graph of a piecewise function. f(x) = { x² if |x|≤1, -x² if |x|>1

### Calculus AP

im still stuck. i need help. evaluate the integral ∫sinx /(1+x^2) dx from -1 to 1

### Calculus

Find the anti derivative of (u^-2(1-u^2+u^4)du. Need steps so I can try to grasp this. Thanks

### 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?

### calculus need help

use the first principle to obtain the differencial coefficient y=1/(2x-1)

### Calculus Need of Urgent help

find the indicated limits, if they exist. 1. lim (3x^3+x^2+1)/(x^3+1) x-> -infinity 2. find the slope of the tangent line to the graph of the given function at any point: f(x) = 2x +7 Could anyone please, please, please explain to me how to do these problems? It seems like ...

### MATH!! Calculus inverses

if g(x) is the inverse of f(X), g(x)=f^-1(x) such that g(3)=5 and f'(5)=4 what is the value of g'(3)??? HELP i just need this one.

### Math (Calculus AB)

An equation to the graph of y=x^3+3x^2+2 at its point of inflection is: a) y=-3x+1 b)y=-3x-7 c)y=x+5 d)y=3x+1 e)y=3x+7 Please help. I am in urgent need.

### MATH(CALCULUS)

f(x)=12x/(sinx+cosx) find f'(-pie) need some help!