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artcher [175]
3 years ago
11

Let f be the function given by f(x)=5x^3 - 3x - 7. What is the value of f’(-2)?

Mathematics
2 answers:
Ainat [17]3 years ago
8 0

Answer:

D. 57

Step-by-step explanation

f(x)=5x^3 - 3x - 7 \\  \\ f'(x) = 5 \times 3 {x}^{2}  - 3 \times 1 - 0 \\  \\ f'(x) = 15 {x}^{2}  - 3  \\  \\ plug \: x =  - 2 \\ f'( - 2) = 15 {( - 2)}^{2}  - 3  \\  \\ f'( - 2) = 15  \times 4  - 3  \\  \\f'( - 2) = 60  - 3  \\  \\f'( - 2) = 57  \\  \\

lesantik [10]3 years ago
4 0

letter c is the correct answer

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