HW4 - 60M - S06 - MW
Handed out Tu 5-9
Due        Tu 5-16 in class
Hand it printout of active work sheet


1) y=(x^3+2x^2-x-2)/(x^3+x^2-4x-4)
Factor both the numerator and denominator
and simplify y as much as possible

2) Solve sin^2 x -2 sin x -3 =0.
Check by plugging in the solutions
and plotting the function

3) Approximate the solutions to the system of equations:
x^2 + 4xy +y^2=4, 5x^2-4xy+2y^2=8

First plot the functions using "contourplot".
Then try using "solve" and finally "fsolve".