Asked by feliz
sin(5x)+sin(7x)=0
live answer in radian form
live answer in radian form
Answers
Answered by
Steve
with a little expansion, you can arrive at
sin(5x)+sin(7x)
= 4sin(x) cos^2(x) (2cos(2x)-1) (2cos(2x)+1)
now the roots are easy to find.
sin(5x)+sin(7x)
= 4sin(x) cos^2(x) (2cos(2x)-1) (2cos(2x)+1)
now the roots are easy to find.
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