# What is the period and amplitude for #I(t) =120 sin (10pix - pi/4)#?

##### 1 Answer

Jun 5, 2015

A general time-dependent wave function can be represented in the following form:

where,

So, comparing with the given equation

Amplitude (

**Now, your supplied equation has no t- dependent parameter in the sine function, whereas the L.H.S. clearly indicates it is a time-dependent function [ #I(t)#]. So, this is impossible!**

Probably, your equation was supposed to be

Under that condition,