(a) f'(x) = 35x^2x^5 + 5x^3*5x^4f'(x) = 15x^7 + 25x^7f'(x) = 40x^7
(b) f'(x) = x*(8x^7 + 3) + (x^8 + 3x + 1)f'(x) = 8x^8 + 3x + x^8 + 3x + 1f'(x) = 9x^8 + 6x + 1
(c) f'(x) = 2xsinx + x^2cosx
(a) f'(x) = 35x^2x^5 + 5x^3*5x^4
f'(x) = 15x^7 + 25x^7
f'(x) = 40x^7
(b) f'(x) = x*(8x^7 + 3) + (x^8 + 3x + 1)
f'(x) = 8x^8 + 3x + x^8 + 3x + 1
f'(x) = 9x^8 + 6x + 1
(c) f'(x) = 2xsinx + x^2cosx