[ღ] Rashelle

I've seen so many of the games, but I can't tell what they're about, Are they any good? What do you do in them? And which one is the best one?

Thanks!

Volume of Solids of Revolution calculus question. Please help?

let R be the region bounded by the lines y = −2x – 4, y = 6, and x = −2. Each problem will describe a solid generated by rotating R about an axis.

Find the volume of that solid when the solid is generated by rotating R about y = −3.

let R be the region bounded by the lines y = −2x – 4, y = 6, and x = −2. Each problem will describe a solid generated by rotating R about an axis.

Find the volume of that solid when the solid is generated by rotating R about x = −2.

How do you find g ' (x) when g(x) = Integral sin(u^2) du 0=b and x=a.?

Find g ' (x) when g(x) = Integral sin(u^2) du 0=b and x=a.

Help is appreciated. I got: –cos(x^2), but I don't know if that's right. Thanks!

Let R be the region bounded by the lines y = −2x – 4, y = 6, and x = −2. Each problem will describe a solid generated by rotating R about an axis. Find the volume of that solid.

1. The solid is generated by rotating R about the y-axis.

2. The solid is generated by rotating R about x = −2.

3. The solid is generated by rotating R about y = −3.

4. The solid is generated by rotating R about x = 1.

I started them, but I didn't get a correct final answer. Here are my equations for the problems: (not sure if they're right)

1. The solid is generated by rotating R about the y-axis. : Integral[6,0] pi 4 - (-2y-4)^2

2. The solid is generated by rotating R about x = −2. : Integral[-2,-5] pi ((0 - (-2y-4)^2

3. The solid is generated by rotating R about y = −3. : Integral [6,0] pi 81 - (-2x - 4)^2

4. The solid is generated by rotating R about x = 1. : Integral [-2,-5] pi 9 - (-2y-4)^2

Please help me find the area. I am bad at integrating.

How do you evaluate f(2), f'(2), and f''(2) for the integral 6t^2 times (sqrtof(1+t^3) dt?

For f(2), I got 104/3, which I know is right.

Help for the other two is appreciated. Thanks.

How do you find the area bounded by the parabola x = 9 – (y – 2)^2 and the y-axis?

Help is appreciated. Thanks.

A skydiver jumps from a plane from 4000 meters and begins to fall at a velocity of v(t) = [(40) / (2t+1)^2] - 60, where v(t) is measured in meters per second. What is the skydiver’s altitude after 15 seconds?

Help is appreciated. Thanks.

How do you find the area of the region bounded to the right by x= -y +4 and to the left by x=y?

Help is appreciated.

Thanks.

How do you do this problem:

If the rate of change of Q is inversely proproportional to Q, (where Q >0) and if if Q(0)=250 and Q(2)=100, find the proportionality constantant?

Help is appreciated. Thanks.

How do you evaluate (Sqrtof(x) +1) from 9 to 4?

Help is appreciated.

Thanks

If a population of fruit flies triples every 6 days. What is k, the proportionality constant?

Help is appreciated.

. If a population of buffalo are becoming extinct. Assume that 150 years ago there were 100,000 buffalo, and that the rate of loss of buffalo is proportional to the population at a given time. If there are 4,000 buffalo remaining, how many years will it before there is only one left? Let P(t) be the number of buffalo and t measured in years. Round to the nearest year.

Assume an object's weight, W, is proportional to its height, H. Does it make sense to use differential equations to model the Weight of the object? If so, write the differential equation. If not, explain why.

If an object's height is changing at a rate proportional to its original height. Does it make sense to use differential equations to model the height, H, of the object? If so, write the differential equation. If not, explain why.

Assume that a population P of wolves in a region is proportional to the area A of the region. Does it make sense to use differential equations to model the population size? If so, write the differential equation. If not, explain why.

If the rate of change of T is proportional to (30 + T), where T > -30. If T(0) = 4, and T(2) = 6, find T(5).

Help is appreciated.

If the rate of change of N is inversely proportional to sec(x)· N where [ -pi/3 < x < pi/3] . If N(0) = 3, and N(pi/6) = 5, Find k, the proportionality constant.

A population P, is increasing proportional to (200 - P), and P never gets larger than 200. At t = 0 the size of the population is 6, at t = 4, the size of the population is 12, what is the size of the population at t = 10?

Help is appreciated.

How do you find the general solution to 2(Sqrtofy) dy/dx - e^x = 0, for y > 0?

Help is appreciated.

Find the general solution to: y(x^2 + 1) + y' = 0, for y > 0.

Help is appreciated.

Calc. question: How do you rewrite the following equation with the variables separated: y' = 6xy^2 + 2xy + 6y^2 + 2y?

Help is appreciated.