Question

find general sol of sin x + sin 3x + sin 5x=0​

Answer 1

Step-by-step explanation:

sin 9x=0

sin 9x=sin 0

9x=0

x=0

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Answer 2

Sin 5x +sinx +sin3x =0
2sin (5x+x)/2* sin(5x-x)/2+ sin3x =0
2sin 3x sin 2x +sin3x =0
Sin3x(2sin2x+1)=0
Sin3x=0 or 2sin2x+1=0
3x = n pi
X= n pi/3 Or 2sin2x=-1
Sin2x = -1/2
Sin2x = sin -pi/6
2x = n pi + (-1)^n (-pi/6)