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densk [106]
3 years ago
6

Find the 90 th derivative of the function ƒ(x)=cos(x)

Mathematics
1 answer:
Inessa [10]3 years ago
5 0
F(x) = cos x
f'(x) = -sin x
f''(x) = -cos x
f'''(x) = sin x
f''''(x) = cos x

90/4 = 22 Remainder 2
Therefore, 90th derivative of f(x) = cos x is -cos x.
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