Find the unit vector that's in the same direction as w=20i-21j

Find the unit vector that's in the same direction as w=20i-21j

Find the components of vector u with a magnitude of 10 and a direction angle of ∅=54°

Find the magnitude and direction angle of v=-7i+3j

Inverse of x^3-4/x

A particle moves on the x-axis in such a way that its position at time t is given by x(t)=3t5 - 25t3 +60t. For what values of t is the particle moving to the left? A) -2<t<1...

Find all extrema in the closed interval (0, 2π) if y=x+sinx

Suppose a quantity of gas (with a fixed mass) is confined in a container of volume V. Boyle's law states that, so long as the temperature of a gas is constant, the product of the pressure of P and...

Give a geometric description of the set of points in space whose coordinates satisfy the given pairs of equations: x^2 + y^2 + z^2 = 25, y = -4. Thank...

If f(x) = sin^4(x)cos^4(x). Then f is increasing function in the interval?

Hi, the question says: find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the line x=5 given functions: y=x, y=0, y=4, x=5 The...

I would greatly appreciate an explanation so I can understand how to solve. I don't want just the answer. Thank you for your help.

a rectangle has its base on the x-axis and its two upper corners on the parabola y=12-x2 What is the largest possible area of the rectangle?

f has a horizontal tangent line f increases without bound f has no tangent line none of these responses f has a horizontal tangent line f...

Use the divergence theorem to evaluate I=S∫∫(4x+3y2+z)dS, Where s is unit sphere x2+y2+z2=1.

Hi, for some of the problems Im doing, I have to rewrite the y function in terms of x. So for example, y=x^3 about the y axis. The only thing I dont get is the rewritting it into x. The solution is...

I have discovered for a data point (a, b) and a function f(x), when (b-f(x))/(f(x)) = 0, then the given coordinate (a, b) is touching exactly on the function's graph. If that 0 where changed...

A spinning liquid of any sort forms a paraboloid; a three dimensional parabolic shape. Therefore, you can apply the physics principles relating to centripetal motion to any mass, m, on the surface...

So I struggle with optimization and we were given a problem and I have no idea on how to do it and I could really use some help please. So a person wants to ship a lot of packing peanuts but they...

I know to suppose (x^5)+(e^x)=0 has two distinct roots. f(a)=f(b)=0 with a/=b , there exists a c E(a,b). Now I am stuck.

I am given the diagram of a right triangle with x and h representing sides a and b, and the information that tan(θ) = h/x. How do I solve for dθ/dt?

Amaan M.

Former High School Math and Economics Teacher

New York, NY

5.0
(68 ratings)

Alex S.

Harvard Grad, Physicist, Published Author: SAT/ACT/GRE/Math/Writing

Brooklyn, NY

5.0
(23 ratings)

Sean B.

Premier NYC Math tutor - young, passionate and talented

New York, NY

4.8
(30 ratings)