# Pre- Calculus

21,552 results, page 83

### Calculus

What methods can I use to prove that the limit as (x,y,z)--> (0,0,0) of a function of 3 variables does not exist?

### calculus

i am struggling with the concept of optimization. does anyone have any hints on how to solve these problems???

### calculus

what is three times the square root of the third derivative of x cubed. where x=y-2 and y=8

### calculus

find the relative extreme of f(x) = 3x^4 - 10x^3 + x - 2 using your calculator. explain how you did it.

### calculus

Use integrals to prove that the volume of a sphere of radius R is equal to (4/3)(pi)R^3

### calculus

what is three times the square root of the third derivative of x cubed. where x=y-2 and y=8

### calculus

Find an equation of the tangent line to the following curve at the point (0, 4). xe^y+ye^x=4

### Calculus A

Find the derivative of this function: y=sin(cosx) Any help would be appreciated.

### calculus

7. f(x)= 6x^3- 9x^2- 360x - 5 What interval is it decreasing? What 2 intervals is it increasing? What is the local max?

### CaLcULus

(5x-4)e^(-2x) How do you find the critical point I don't understand how to take the derivative of e^ to a negative?

### Calculus

Determine the area of the region enclosed by the limaçon r=5+2sin(theta)

### Calculus

How do I find the frequency of this oscilliating spring. A= 10cm displacement t= 1s h(t)= Acos2ðft

### Calculus

Is the function F(x)= the square root of 1-x^2 continuous at x = 1? Give the reason for your answer.

### Calculus

Use logarithmic differentiation to determine the derivative of the function defined by f(x)=x^5(x-3)^9/(x^2+2)^4

### calculus

find the point(s) on the graph of y = (2x4 + 1)(x - 5) where the tangent line slope is 1.

### Calculus (Thanks a bunch!)

Simplify the following expression 5lnx - 1/2 lny + 3 lnz

### calculus

Which of the following is the same as 4 ln2x? a) ln8x B)8lnx c)ln8 + lnx d)ln 16^4

### calculus

find the domain and range of the function g(x)= 10+2x-x^2 (all under radical)

### calculus

n(x)=x^5+xe^x, find the real zeroes using newton-raphson methodology.

### Differential Calculus

Given that p=(2q^2 - 5)^2. when q=3, it is increased by 0.7%. find the appropriate percentage change in p.

### Differential calculus

Given that y=x^3/3-2x^2+3x+2 find its turning points and state their nature

### Calculus

Evaluate y' at (2,1) [Implicit differentiation] 5xy-3x-4=0 I got 3/10 and 2/10 but both were wrong.

### calculus - limits

can someone help me determine that limit for the following function, as x --> -2? 2 - abs(x) / 2 + x

### calculus - identities

prove this identity: sec(y) - cos(y)= tan(y)sin(y) THANK YOU!!

### Calculus

Use Mean Value Theorem and find all numbers c in (a,b) 1.x+(4/x) [1,4] Help me!

### Calculus

What is the area of the largest rectangle that can be placed in a 5-12-13 right triangle (as shown)?

### Calculus

f(x) = [3/x^2] - [5/x^7], F(x) is the antiderivative of f(x) with F(1)=0. F(x) = ? I have no idea how to approach this problem. The fractions are scaring me.

### calculus

integrate x*(x+1)^9dx I believe the substitution method is the proper way?

### Calculus

Find the concavity and min and max for f(x) = x*sqrt(x^2+36) defined on the interval [-4, 7]?

### calculus

find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) i am getting the y^3 dx when i do seperation of variables how do i deal with this.

### calculus

find the general solution x^2-2(e^y)dy/dx = y^3+e(x^2) i am getting the y^3 dx when i do seperation of variables how do i deal with this.

### AP Calculus

Locate the absolute extrema of the function f(x)=2x^2-12x+4 on the closed interval [-6,6].

### calculus

lim (x->0.5 from the left)((2x-1)/|(2x^3-x^2)| = -4 I would have thought positive four. How can this be?

### Math-Calculus

Posted question rewritten lim x-> -1 108(x^2+2x)(x+1)^3 ____________________ (x^3+1)^3 (x-1)

### calculus ||

use a grapher to fine the length numerically (x)=2sin (y) ,pi/3 < y< 2pi/3

### calculus

Use the Table of Integrals to evaluate the integral (x sine(6x^2)cos(7x^2)dx)

### calculus

find the derevative (hint try to use limits) (x^2010 - 1 )\(x -1 )

### calculus

Find an equation of the tangent line to the curve at the given point. y= (9x)/(x+1)^2 P = (0,0)

### calculus

Describe all of the different ways a function may not be differentiable at the point P (a,f(a)).

### Calculus

Find the number c that satisfies the conclusion of the Mean Value Theorem. f(x) = x/(x + 4) [1, 8]

### Calculus

Find the scalar and vector projections of b onto a. a = 2i - j + 6k, b = j + (1/2)k compab = projab =

### Calculus

show the following linearization of the function f(x)=cos(3x)-3sin(3x) at x=2pi

### Calculus

Solve for x: Lnx= -5 I am stuck on this simple qusetion, i know the answer is .01, but I donr't know how to get it. Thanks!

### calculus

Estimate approximately the slope of the tangent of y=2sinx+cosx at the point x=4,2

### vector calculus

find an equation for the plane that contains the line x = 2t-8, y=3t +3, z= 5- t, and the point (5,4,0)

### calculus

What is the volume obtained by rotating the graph y=x^2 for 0<y<1 about the oblique axis y=x

### calculus

find the area of the regions enclosed by the lines and curves. x+y^2=0 and x+3y^2=2 i know the answer is 8/3, but i don't know how to get it.

### Calculus II

How do you integrate the function -- > sinx (4^cosx) from 0 to pi/2 I did "u-substitution" to make it the integral from 1 to 0 of 4^u but then i don 't know where to go from there! Thank you

### calculus

to the nearest metre x=24m and y=6m. Calculate the upper bound for the value of xy

### Calculus

How do I find the integration of √(cot) / sin^2(x) by using substitution?

### Calculus

Resolve u=[3,4,7] into two orthogonal vectors, one of which is collinear with v=[1,2,3].

### Calculus

Resolve u=[3,4,7] into two orthogonal vectors, one of which is collinear with v=[1,2,3].

### Calculus

Resolve the vector v=[7,9] into rectangular components, one of which is in the direction of u=[6,2].

### Calculus

Write a scalar equation of each plane, given its parametric equations. x = 3 - 2s + 2t y = 1 + 3s + t z = 5 - s - 2t

### Calculus

Write this expression as a single logarithm 6ln(x+8)+1/8lnx-ln(cosx)

### Calculus-implicit differentiation

How do I find the normals to the curve xy+ 2x - y = 0 that are parallel to the line 2x + y = 0

### Calculus

Diffentiate the function F(x)=(1/2x)^5 My answer is 5/2x^4. The book says 5/32x^4. what am I doing wrong?

### Calculus

Can someone help me to integrate by substitution the indefinite integral: (sinx)/ (1+cos(^2)x)?

### calculus

addendum to previous ques. hope someone will deal with this seriously.

### Calculus

Find f(x)' of f(x)=x^x^x I logged both sides to get ln y = x^x ln x But I am not sure what step to do after that.

### calculus

Solve this over the interval [0,2pi): sin(3x)=(square root of 2)/2

### Calculus III

P=(2,1,0) Q=(1,5,2) R=(-1,13,6) Are P, Q, and R collinear? If not, find a vector normal to the plane containing them.

### Calculus

Use the cross product to find the area of the triangle with vertices: P=(1,1,5) Q=(3,4,3) R=(1,5,7)

### calculus

limit as x approaches negative infinity for the function (-x)/(sqr root (x^2-36))

### calculus

Find all positive values of x that satisfy x multiplied by the x root of x^2 = x^x

### Calculus

Show that the limit for [x^2cos(1/x)]=0 as x approaches 0. How would I solve this algebraically?

### Hard Calculus

f(x)= xsquared -2x for y= absolute value of f(x) does the derivitive exist at x=0 and explain why.

### calculus

if the tangent line to the function f(x)=ãx +a at x=16 has equation y=mx+6. find a and m. you may use the fact that f'(x)= 1/(2ãx)

### calculus

consider the function f(x)=2x^2 +1. its tangent line at x=2 goes through the points (2,y1) and (-1,y2) where y1=?, y2=?

### calculus

consider the function f(x)=2x^2 +1. its tangent line at x=2 goes through the points (2,y1) and (-1,y2) where y1=?, y2=?

### calculus

find the derivative of the function (6x+1)/(19x+1)^1/2 PLEASE EXPLAIN IM LOST

### calculus

Find the equations for the lines tangent to the ellipse 4x^2+y^2=72 that are perpendicular to the line x+2y+3=0

### Calculus....

can you show me how to maniplate this using Trig subtitution... integral dx/4+x^2 x is bounded on [-2, 2]

### Calculus

Find the equation of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( -3 , -1 )

### calculus

If f(1) > 0 and f(3) < 0, then there exists a number c between 1 and 3 such that f(c) = 0. Is this true or false? Please and thank you

### CALCULUS

Find the relative extrema of function. f(x,y)=x2+3xy+y2-10x-20y+12

### calculus

If a store credit account charges 1.2% interest each month, what is the APR?

### Calculus Help

Determine the point at which the graph of the function has a horizontal tangent line. f(x) = (9x^2)/(x^2+6)

### Ap calculus

Find the equation of the tangent line to the curve g(X)= 2cos(2X)/(3X) at the point x= pi/3

### calculus

find the absolute maximum and minimum values of f on the given interval f(x)= (x^2-4)/(x^2+4), [-4, 4]

### Calculus

How do you find the area under the witch of agnesi? (for all radii)

### calculus

find a non-zero value for the constant "k" so that f(x) =tan(kx)/x, if x < 0 3x + 2k^2, if x> 0 will be continuous at x=0

### Calculus

Find the minimum distance, measured horizontally, between the graphs of y=x and y=x^3

### Calculus

Use a linear approximation (or differentials) to estimate the given number. (32.06)^4/5

### Calculus

Find all values of x, where the graph of y = [(5x^3)-(6x)+(8)] / (x^2) crosses its oblique asymptote.

### Calculus

Find all values of x, where the graph of y = [(5x^3)-(6x)+(8)] / (x^2) crosses its oblique asymptote.

### Calculus

what is Trapezoidal rule? How does it work in finding the area under the curve(s)?

### Calculus

What are the x-coordinates of the points of inflection for the graph of f(x)sin^2x on the closed interval [0,pi]?

### calculus

Find the area of the region under the graph of the function f on the interval [-1, 2]. f(x) = 6x + 1

### AP Calculus

True or False If f'(c)=0=f''(c)is less than 0, the f(c) is a local maximum. Justify your answer.

### calculus

find deriviative using definition lim x heads toward a of f(x)-f(a)/ (x-a) of x^5

### Calculus AB

Find the equation of the line tangent to the curve at t=pi/3: a) x=t-sin(t) b) y=1-cos(t)

### AP Calculus

A line is perpendicular to 2x+y-7=0 and passes through (4,6). Find the y coordinate of the point where x=-8

### calculus

How many critical points are in the function: f(x)= (x+2)^5 * (x-3)^4 What is the most time-efficient way to do this?

### calculus

A bug walks along the circle x^2 + y^2 = 4. When it is at the point (1, (3)^1/2)), dx/dt = 2. Find dy/dt at this instant.

### calculus

A bug walks along the circle x^2 + y^2 = 4. When it is at the point (1, (3)^1/2)), dx/dt = 2. Find dy/dt at this instant.

### Calculus

What is the slope-intercept equation of the line tangent to the graph of y=8ln(x) when x=5.

### Calculus

Use a graph to estimate: Lim x-> 0 of sin(8x)/x when x is measured in degrees.

### Calculus

Find the exact area below the curve (1-x)*x^9 and above the x axis