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## Homework Statement

So the question is how does

4/π*(sin(πx))+4/3π *(sin(3πx))+4/5π *(sin(5πx)) = 1

for values of 0<x<1

## Homework Equations

No relevant equation needed just don't understand which values of x to take.

## The Attempt at a Solution

I am not sure which value of x to start with, it could be anything 0.1 or 0.5, how do I know which x value to start with? I have taken 0.5 and ended up with 1.05 and then taken 0.9 and ended up with 1.15. How the hell does this equal to 1 for any x value?!!!! Please help...