Homework Statement
\int\frac{e^x}{(e^x-2)(e^2x +1)} it should be e to the power of 2x
Homework Equations
Using substitution u=e^x, and then using partial fractions
The Attempt at a Solution
I have done this problem two separate ways. One with substitution and then partial...
Homework Statement
Solve the integral x/x^2+4x+13
Homework Equations
I think that you would use partial fractions but I'm not really sure. I know that you need to complete the square on the denominator.
The Attempt at a Solution
The completed square would be (x+2)^2+9. I don't...
they would be parallel because they are scalar multiples of one another (1 is the multiple) also the cross product would be zero indicating parallel vectors.
Homework Statement
The line l passes through the point P=(1,-1,1) and has direction vector d=[2,3,-1]. Determine whether l and P are parallel, perpendicular, or neither to 2x+3y-z=1.
Homework Equations
n.p=n.x, cross product, dot product
The Attempt at a Solution
Would you just...
Homework Statement
The line l passes through the point P=(1,-1,1) and has direction vector d=[2,3,-1]. Determine whether l and P are parallel, perpendicular, or neither to 2x+3y-z=1.
Homework Equations
n.x=n.p, also cross product for parallel lines, and dot product for perpendicular...
Homework Statement
Let P and Q be points with corresponding vectors p and q.
a) show that the vector 1/2p+1/2q is the midpoint of the line segment joining P and Q
b)Find a point that is one third of the distance from P to Q
Homework Equations
No idea
The Attempt at a Solution
I'm not really...