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## Homework Statement

the equation of a stationary wave produced on a string whose both ends are fixed is given by

y= [0.6sin(pi/10)x]cos(600pi)t

what could be the smallest length of string?

## Homework Equations

k=2pi/wavelength

## The Attempt at a Solution

i got the wavelength to be 20 but don't know how to proceed,in the solution it is given that

"since the string is fixed at both ends the minimum length should be half of the wavelength"i couldn't understand this statement why should it be half?please explain