2 years ago

Help !!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Nitella [24]2 years ago

3 0

Is it supposed to be a decimal???

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3 years ago

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3 years ago

Can someone proove it to me<br> thank you for your help

Dovator [93]

$\sin(2x + x) = \sin(2x) \cos(x) + \\ \cos(2x) \sin(x) = 2 \sin(x) { \cos(x) }^{2} \\ + \sin(x) { \cos(x) }^{2} - { \sin(x) }^{3} = \\ 3 \sin(x) { \cos(x) }^{2} - { \sin(x) }^{3} = \\ 3 \sin(x) - 3 { \sin(x) }^{3} - { \sin(x) }^{3} = \\ 3 \sin(x) - 4 { \sin(x) }^{3}$

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3 years ago