(f o g)(x) = f(g(x))
= (g(x))³ + 4
= (2sinx)³ + 4
= 8sin³x + 4
Jadi, ( f o g) (-90) adalah
= 8sin³(-90) + 4
= 8.(-1) + 4
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(f o g)(x) = f(g(x))
= (g(x))³ + 4
= (2sinx)³ + 4
= 8sin³x + 4
Jadi, ( f o g) (-90) adalah
= 8sin³(-90) + 4
= 8.(-1) + 4
= -8 + 4 = -4Terima kasih