The derivatives of 2x 1 3x 1 is - JAMB Mathematics 2011 Question
The derivatives of (2x + 1)(3x + 1) is
A
12x + 1
B
6x + 5
C
6x + 1
D
12x + 5
correct option: d
(2x + 1)(3x + 1) IS
2x + 1 (\frac{d(3x + 1)}{d}) + (3x + 1) (\frac{d(2x + 1)}{d})
2x + 1 (3) + (3x + 1) (2)
6x + 3 + 6x + 2 = 12x + 5
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