lexus1427
19.05.2020 •
Mathematics
F(x) = 1/2 * x ^ 2 + 2x - 5 at x = 2
Evaluate the Derivative at x = 2
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Ответ:
4
Step-by-step explanation:
f(x) = 1/2 * + 2x - 5
f'(x) = d/dx (1/2 * + 2x - 5)
=d/dx 1/2 * + d/dx 2x - d/dx 5
d/dx 1/2 * = x [Because to differentiate a exponential, you multiply the coefficient by the exponent (1/2 * 2) and then subtract 1 from the exponent: 2-1 = 1]
d/dx 2x = 2 [same as the explanation above]
d/dx 5 = 0 [differentiating a constant always equals zero]
so f'(x) = x+2
so f'(2) = 2+2 =4
Ответ:
12
Step-by-step explanation:
√(9×16) =√9×√16 = 3 ×4 = 12