Question: 21. f(x) = 7x x 2 + 4 22. Determine ( x2 4 1 7x-3) and d 3t-2 dx dt (5t + 1 ) 23.

21. f(x) = 7x x 2 + 4 22. Determine ( x2 4 1 7x-3) and d 3t-2 dx dt (5t + 1 ) 23. Find (a) d dx -( xe* ) and (bit d (e ). dx 24. Find (a) (te'), (b) dle*) di In problems 25 - 30, find the derivative of each function. 25. f(x) = (2x -8)5 26. f(x) = (6x - x2) 10 27. f(x) =x (3x+7)5 28. f(x) = (2x+ 3).(x - 2)4 29. f(x) - Vx2 + 6x - 1 30. f(x) - X -5 (x + 3 )

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