f(x)=40cos(8x^7)

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Solution for f(x)=40cos(8x^7) equation: 


Simplifying
f(x) = 40cos(8x7)

Multiply f * x
fx = 40cos(8x7)

Remove parenthesis around (8x7)
fx = 40cos * 8x7

Reorder the terms for easier multiplication:
fx = 40 * 8cos * x7

Multiply 40 * 8
fx = 320cos * x7

Multiply cos * x7
fx = 320cosx7

Solving
fx = 320cosx7

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = 320cosx6

Simplifying
f = 320cosx6

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