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1. |
Let f be a differentiable function defined for all x ∈ R such that f(x3) = x5 for all x ∈ R, x ≠ 0. Then the value of \(\dfrac{df}{dx} (8)\) is: |
A. | 5/3 |
B. | None of these |
C. | 20 |
D. | 20/3 |
Answer» E. | |