13. What is the derivative of f(x) = sin(xx) for x > 0?
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A. xx(1 + ln x) cos(xx) |
B. xx cos(xx) |
C. xx ln x cos(xx) |
|
D. cos(xx) |
E. cos(xx ln x) |
Solution: The answer is A
Since, xx = (eln x)x = exln x, we can rewrite f(x) as follows:
Use the Product Rule to differentiate with respect to x.
