 Lv 116 points

# Exp

• ### linear transformation?

Let a be a fixed vector. Show that the transformation T(x) = a·x

is a linear transformation (whose output values are numbers).

• ### math question?

Sketch the region enclosed by 2y=3x√,y=5, and 2y+3x=6.

Decide whether to integrate with respect to x or y, and then find the area of the region.

• ### Write a parametric form of the plane x1 + x2 + x3 = 1?

Mathematics9 months ago
• ### math question?

Find an equation form for the line in parametric form below:

(1, 2) + s(1, 2)

• ### area question?

Find the volume of the parallelepiped with one vertex at (−3,−1,5), and adjacent vertices at (1,−2,−2), (−2,−1,0), and (−3,1,−1).

How can I answer this question using the determinant of a 3x3 matrix?

• ### integral problem?

The velocity function is v(t)=t2−3t+2 for a particle moving along a line. Find the displacement and the distance traveled by the particle during the time interval [-1,5].

I figured out the displacement to be 18 but I can't seem to get the total distance travelled.

• ### What does the double line mean "||a||" in terms of vectors?

• ### Where did this formula come from?

Mathematics10 months ago
• ### Math integral question?

Could someone please explain this question to me very carefully?

• ### MATH question?

Prove that 4^x = 3cos(x) has exactly one positive solution?  I know that on the negative side the function has infinite solutions.  I was thinking to use contradiction via m.v.t. to prove the one positive solution but I'm not to sure how to apply it.

• ### Limit problem math.?

How do I take this limit?

• ### Math question?

How can you tell if the Taylor approximation is an over or under estimate? Is there a general way or does it depend on the degree of the approximation?

• ### Math question ?

Why are 0 and e within the domain of ln(1-lnx)?

• ### Simplification question?

I’m having problems simplifying  f’’(x). f’(x) = 18x/(x^2+3)^2. Could someone show me the way?