What is y= x^2 + 1 in polar form
When changing from rectangular form (or vice-versa), always
draw this firs:
The idea is to get rid of the letters x and the y and end
up with an equation that has only r and θ in it.
Write what we know about the sine and cosine:
, solve for y, get 
, solve for x, get
Substitute in
or
Edwin
