What is the value of A in Ψ=Acos^2(x) for a particle's wave function?

[Hamza Abbasi]

Homework Statement

The wave function of a certain particle is Ψ= A cos^2(x) for -π/2 < x < π/2. Find the value of A.

Homework Equations

The Attempt at a Solution

My answer is coming out to be zero wheres as the correct answer is under root 8/3π ... Please help me out !

 

[Drakkith]

You're going to need to show your work, otherwise we have no idea where you've made a mistake.

 

[Hamza Abbasi]

http://IMAG0268 http://IMAF0269

 

[Hamza Abbasi]

 

[Hamza Abbasi]

i have used pi/4 instead of pi/2 ignore that pls