## Question

###### 3. Finding the following Derivatives. (1) f(x) = 3 +5 (2) f(x) = -4° -2x f(x)...

3. Finding the following Derivatives. (1) f(x) = 3 +5 (2) f(x) = -4° -2x f(x) = (3) f(x) = 27 x? (4) (5) f(x) = (3x2 - 1) (6) f(x) = 2x(x +1)

## Answers

Finding the derivatives (1) f(x) = 3 +T flex) Sol": derivative of a constant function is always ZO. f(x) = -x3_2x f'(x) = = - 3x² - 2 Sol: I using derivatiul properly x = non- PO) F(x) = 2 22 soli f'(x) = 2.82 -3 2.(-2)x 23. F'(x) = - 4 -314 ciu - -2 f(x) = -1 4½ -3-1 sol? f'(x) = 3 4 -7 x 4 1 f'(x) = 3. 4 x 7 4 12 x (3x²-1) Sol: f(x) = (3x² - 1)² flex) 2 ( 3x²-1). 6x [f'(x) = 12x (3x²-1).: Using (a.b)'s Q.b'+b.al vi) sor": f(a)= 2n(n+1) f'(x) = 2x11+ (2+1) 2 2x+ 2x+2 = 4x + 2 = 2(274+1) flex) = 2(2x+1) Thank you.

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