The question is:

show graphically that sinx=mx has no non-zero solutions for -pie<x<pie when m<0.

Solution:

I drew the two graphs just by estimates,and they dint intercept.As the m is always going to be steeper,but I wanted to know if there is a concrete way to prove this.You know like doing a table or something.

I know it is a very nooby question,and I apologize for the inconvenience.

But honestly,with my Uni exams in a month and me missing most of the classes,this forum is my only source of getting ANY problems sorted out and hence I came here.

Thanks in advance for the help.