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12.07.2019 •
Mathematics
If f(x) = 5x2+2, then what is the slope of f(x) at x = 4?
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Ответ:
The slope of a function at a point is the value of its derivative there.
... f'(x) = 5·(2x) + 0 = 10x . . . . . . using the power rule: (d/dx)(xⁿ) = n·xⁿ⁻¹
Then
... f'(4) = 10·4 = 40 . . . . . the slope at x=4
Ответ:
5/2
Step-by-step explanation: