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Questions Answered

Idealist:
If dy/dx=1/x, then the average rate of change of y with respect to x on the closed interval [1, 4] is
a) 1/4
…
 updated 20 hours ago
 8 replies
 4 Medals
Mathematics

Idealist:
If f(x)=sigma (sin^2 (x))^k from k=1 to infinity, then f(1) is?
 updated yesterday
 15 replies
 1 Medal
Mathematics

Idealist:
Let F(x)=integral of sin(t^2) dt from 0 to x for 0<=x<=3. On what interval or intervals is F increasing? Justify your answer.
 updated 4 days ago
 11 replies
 1 Medal
Mathematics

Idealist:
Using 8 equal subdivisions of the interval [2, 12], the LRAM approximation of the integral of f(x) dx from 2 to 12 is 16.6 and the trapezoid…
 updated 4 days ago
 2 replies
 1 Medal
Mathematics

Idealist:
Let F(x) be an antiderivative of sin^3 (x). If F(1)=0, find F(8).
 updated 4 days ago
 10 replies
 1 Medal
Mathematics

Idealist:
Find the area enclosed by the curves y=x^38x^2+18x5 and y=x+5?
 updated 7 days ago
 4 replies
 1 Medal
Mathematics

Idealist:
Find the sum of the series 1+ln(2)+(ln 2)^2/2!+...+(ln 2)^n/n!+...?
 updated 7 days ago
 6 replies
 2 Medals
Mathematics

Idealist:
Find the integral of (1/x4x/(1+4x^2)) from 1 to infinity.
 updated 7 days ago
 9 replies
 3 Medals
Mathematics

kryptonite1218:
What is the correct solution to the equation?
4(x – 3) = 16
…
 updated 7 days ago
 4 replies
 2 Medals
Mathematics

Idealist:
Find the integral of 4x/(1+4x^2) dx from 1 to infinity.
 updated 7 days ago
 4 replies
 2 Medals
Mathematics

Idealist:
If y=tan u, u=v1/v, and v=ln x, find the value of dy/dx at x=e.
 updated 7 days ago
 6 replies
 1 Medal
Mathematics

lillers4126:
What is the solution for:
y=x+3
y=2x
 updated 7 days ago
 3 replies
 No Medals Yet
Mathematics

Dark*Chaos:
x11 < 3
 updated 9 days ago
 9 replies
 1 Medal
Mathematics

NERD85176:
19 + x = 37
I think I would take 19 and subtract it from both sides, getting x=18
Am I right?
 updated 9 days ago
 5 replies
 1 Medal
Mathematics

tbl:
factor x squared  12x +35
A. (x+5)(x+7)
B. (x5)(x7)
…
 updated 9 days ago
 2 replies
 1 Medal
Mathematics

Idealist:
Find the integral of (1/2)(4/(1+sin(theta)))^2 d*theta from 0 to pi.
 updated 9 days ago
 19 replies
 1 Medal
Mathematics

Idealist:
A particle moves along the graph of y=cos x so that its xcomponent of acceleration is always 2. At time t=0, the particle is at the point (…
 updated 10 days ago
 1 reply
 No Medals Yet
Mathematics

Idealist:
Find the area bounded by the curve and the xaxis for r=theta+sin(2*theta) for 0<=theta<=pi.
 updated 10 days ago
 8 replies
 No Medals Yet
Mathematics

Idealist:
The position of a particle at any time t>=0 is given by x(t)=t^22, y(t)=(2/5)t^3. Find the magnitude of the velocity vector at t=4.
 updated 11 days ago
 10 replies
 2 Medals
Mathematics

Idealist:
For what values of t does the curve given by the parametric equations x=t^3t^21 and y=t^4+2t^28t have a vertical tangent?
 updated 11 days ago
 7 replies
 1 Medal
Mathematics

Idealist:
How to simplify the (integral from 3cos^2 (theta) d*theta from 0 to pi) to (3*integral of cos^2 (theta) d*theta from 0 to pi/2)?
 updated 11 days ago
 2 replies
 2 Medals
Mathematics

Idealist:
The path of a particle moving in the plane is defined parametrically as a function of time t by x=sin(2t) and y=cos(5t). Find the speed of t…
 updated 11 days ago
 5 replies
 1 Medal
Mathematics

Idealist:
Use the first three terms of the series f(x)=((x^n)(n^n))/n! from n=1 to infinity to approximate f(1/3).
 updated 14 days ago
 4 replies
 1 Medal
Mathematics

Idealist:
Please simplify this: (n+1)^n/(n^n)
 updated 14 days ago
 11 replies
 1 Medal
Mathematics

Idealist:
Please simplify this: n!/(n+1)!
 updated 14 days ago
 19 replies
 4 Medals
Mathematics

Idealist:
Find the integral of 1/((x+1)(x^2+1)) dx.
 updated 17 days ago
 11 replies
 2 Medals
Mathematics

Idealist:
Find the integral of (2x1)/(x1)^2 dx.
 updated 17 days ago
 16 replies
 1 Medal
Mathematics

Idealist:
Find the integral of (x+4)/((x1)(x+6)) dx. (Just write the answer)
 updated 18 days ago
 1 reply
 No Medals Yet
Mathematics

Idealist:
Find the interval of convergence of the series (n(2x5)^n)/(n+2) from n=0 to infinity?
 updated 18 days ago
 8 replies
 1 Medal
Mathematics

Idealist:
Find the sum of the series pi^n/e^(2n) from n=0 to infinity.
 updated 21 days ago
 3 replies
 2 Medals
Mathematics
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