- #1
ChickysPusss
- 13
- 1
Homework Statement
OK, I need to solve for the fixed point of the equation
2sinπx + x = 0
on the interval [1, 2]. I know the answer to be ~1.21... but I need to prove it.
The Attempt at a Solution
I really just need help solving for a proper equation of x. I tried x = -2sinπx, but that doesn't work on the interval for the method I am using to solve for the fixed point (Banach).
So I tried this
2sinπx = -x
sinπx = (-x/2)
πx = arcsin(-x/2)
x = (1/π)*arcsin(-x/2)
But this equation seems totally wrong, as anything past 0 is negative. Can anyone tell me what I'm doing wrong, or perhaps that there is another way to solve for x? Thanks.