Find out the equation of the standing waves for the following standing wave pattern.

Explanation

General Equation of standing wave
`y=A ^'cos omegat`
where
`A^'=A sin (kx+theta)`
here `lambda` =L
`rArr k=(2pi)/L`
`A^'A sin (kx+theta)=A sin ((2pi)/lx+theta)`
at x=0 node
`rArr A^'=0 at x=0`
`rArr theta=0`
eq. of standing wave `Asin (2pi)/Lx cos omegat`