Sketch y = cos-1(2x) and y = sin-1(3x)
The Attempt at a Solution
This is my attempt
cos-1(2x) = y, which means cos y = 2x
produce a table with y from (-pi/2 to pi/2)
What I want to confirm is the 2x. I need do 1/2 x instead of 2x when we calculate the x?
And 1/3x for the other problem?