2[sin(x)]^3=sinx
thx :)
thx :)
-
... 2sin^3(x) = sin(x)
or sin(x) ( 2 sin^2(x) - 1 ) = 0
or sin(x) = 0 .... → x = nπ
or sin(x) = 1/√2 → x = { π/4 (8n+1), π/4 (8n+3) }
or sin(x) ( 2 sin^2(x) - 1 ) = 0
or sin(x) = 0 .... → x = nπ
or sin(x) = 1/√2 → x = { π/4 (8n+1), π/4 (8n+3) }
-
2[sin(x)]^3/sinx=1
2(sinx)^2=1
(sinx)^2=1/2
sinx=sq rt (1/2)
2(sinx)^2=1
(sinx)^2=1/2
sinx=sq rt (1/2)