Explore BrainMass
Share

# Calculus and Analysis

### Lower Estimate, Upper Estimate?

Please see the attached file for the fully formatted problems. 14) A power plant generates electricity by burning oil. Pollutants produced as a result of the burning process are removed by scrubbers in the smokestacks, Over time, the scrubbers become less efficient and eventually they must be replaced when the amount of pol

### Linearization Functions Solved

Find the linearization, L(x) of f(x) at x = -7 f(x) = sqrt(x^2 + 15).

### Stable and Unstable Equilibria

Which equilibria is stable and which is unstable? Please see attached file for full problem description.

### Solving Equations : Newton's Method

Please see the attached file for the fully formatted problem. The equation x2 - 3x + 1 = 0 has a solution for x>= 0. Give the third approximationby using Newton's method. Your first approximation is to be 1.

### Surface of Revolution

Y=2*sqrt[x] y=0, x=3 We are using the following formula 2pi intergal of r(x) times the sqrt of 1 + (f'(x))^2.

### Taylor Approximation Related Problem

Please see the attached file for the fully formatted problems. Questions pertain to Second order Taylor approximations and integrals for two first order differential equations.

### Inequality Proof Function

Prove that if x>0, then 1+x/2-x^2/8<(1+x)^(1/2)<1+x/2

### Differential equations functions

Define: f(x) = (x^2)sin(1/x)+x if x doesn't equal 0 f(x) = 0 if x=0 Prove that the function f:R-> R is differentiable and that f'(0)=1. Also prove that there is no neighbourhood I of 0 such that the function f:I->R is increasing.

Sum of a series

### Analysis/total differentials

Evaluate f(1,2) and f(1.05, 2.1) for the function Æ'(x,y)=x/y. a) calculate &#916;z b) use the total differential dz to approximate &#916;z

### Chain rule evaluation

You are given the function w=yz/x, where x=&#952;^2, y=r+&#952; and z=r-&#952;. Find &#8706;w/&#8706;&#952;. a) using the appropriate chain rule b) converting w to a function of r,&#952; before differentiating. Which of the above is quicker?

A metal plate is located in an xy-plane such that the temperature T at (x,y) is inversely proportional to the distance from the origin, and the temperature at point P(3,4) is 100 (i.e. the temperature at any point (x,y) is described by the function T(x,y) = 500/(x^2 + y^2)^1/2 a) in what direction does

### Level curves of a function

Describe the level curves of the function. Sketch the level curves for the given values of c. f(x,y) = x^2 + 2y^2, c = 0,1,2,3,4

### Describe projection on the x-y plane ( center, radius)

Describe projection on the x-y plane ( center, radius)

### Set up integral for surface area.

Please see the attached file for the fully formatted problems. Use the formulas to set up an integral for the surface area of the first octant portion of the sphere p=a, do not evaluate. See attachment

### Proof: Upper and lower limits

Please see the attached file for the fully formatted problems. Let be a sequence of real numbers. We define and I'm having trouble with the following three proofs: 1) Show that 2) Show that if the limit of only exists when , then . 3) Show that if , then the limit exists, and .

### 8 calculus problems

Please answer eight (8) calculus problems. Please show as much works as possible for every problem. The problems are posted in the following website: http://www.netprofitspro.com/math.html

### Real Analysis: Differential Equations (Leibnitz Formula)

Let I be an open interval and n be a natural number. Suppose that both f:I->R and g:I->R have n derivatives. Prove that fg:I->R has n derivatives, and we have the following formula called Leibnitz's formula: (fg)^n(x) = the sum as k=0,1,2,...n of(n choose k)f^k(x)g^(n-k)(x) for all x in I. Write the formula out explicitly

### Volume enclosed by a surface.

Show that the volume enclosed by the surface ___ is equal to ___. Please see the attachment.

### Average distance from a point on a disk.

Please see the attached file for the fully formatted problem. Show that the average distance of a point of a disk with radius a is...

### Volume and Centroid of an Ice Cream Cone (Sphere on top of Cone).

Please see the attached file for the fully formatted problems. Find the volume and centroid of the ice cream cone.

### Mass and centroid of a Plane Lamina

Please see the attached file for the fully formatted problem. Find the mass and centroid of a plane lamina with the given shape and density delta, the region bounded by y = x2 and x = y2 delta(x,y) = x2 + y2.

### Critical points of a polynomial of degree 3.

Give examples of polynomials of degree 3 that have no critical point, only one critical point, and two critical points.

### Fundamental differential equation analysis

If I be an open interval containing the point x. (x0) and suppose that the function f:I->R has two derivatives. Prove that lim as h->0 (f(x.+h) - 2f(x.) + f(x.-h))/ h^2 = f"(x.)

### Proof that the derivative of the inverse cosine of x = -1/ sqrt(1-x^2)

The inverse cosine function has domain [-1,1] and range [0, pi]. Prove that (cos^-1)'(x) = -1 / sqrt(1-x^2)

### Implicit Differentiation

Find dy/dx implicitly: x^2+6xy-5y+y^3=12

### Position and Velocity Functions for the Ball

A ball is dropped from the top of a building which is 1000 feet tall. GIVEN (s(t)=-16t^2+v(initial)t+s(initial)) A. Write the position and velocity functions for the ball. B. Find the instantaneous velocity went t = 2 seconds. C. How long does it take the ball to reach the ground. Please solve using calculus (derivativ

### Functions: Equation of Tangent Line

Find the equation of the line tangent to the graph of f(x)=x^3+x at the point (-1,-2).

### Function : Horizontal Tangent Line

Find the points at which the function has a horizontal tangent line. f(x)=x^2+4x+5

### Differentiation of Functions: Rate Change in Radius of a Sphere

A spherical baloon is being inflated at a rate of 400 cubic cm/min. At what rate is the radius changing when the radius is 25 cm. GIVEN (V=4/3*pi*r^3)