Question

sin2x+sqrt2sinx=0 помогите плиз.

Answer 1

$sin2x + sqrt{2} sinx=0 \ 2sinxcosx+sqrt{2} sinx=0 \ sinx(2cosx+ sqrt{2} )=0 \ 1)sinx=0 \ x= pi k \ 2)2cosx+ sqrt{2}=0 \ cosx=- frac{ sqrt{2} }{2} \ x=+- frac{3 pi }{4} +2 pi n$
k;n∈Z

Answer 2

$sin2x+ sqrt{2} sinx=0 \ 2sinxcosx+ sqrt{2} sinx=0 \ sinx(2cosx+ sqrt{2} )=0 \ sinx=0 \ x= pi n \ 2cosx+ sqrt{2} =0 \ 2cosx=- sqrt{2} \ cosx=- frac{ sqrt{2} }{2} \ x=+- frac{3 pi }{4} +2 pi m$

n∈Z
m∈Z

Answer 3

сейчас

Answer 4

жду)