32. เดฝ (3x^2 + 2x + 4) dx sama dengan ...
a. x^3 + 2x^2 + 4x + C
b. x^3 + x^2 + 4x + C
c. x^3 - 2x^2 + 4x + C
d. x^3 - x^2 + 4x + C
e. x^3 + x^2 - 4x + C
Jawaban :
เดฝ (3x^2 + 2x + 4) dx
= 3/(2 + 1) x^(2 + 1) + 2/(1 + 1) x^(1+ 1) + 4x + C
= x^3 + x^2 + 4x + C
Jawaban : B
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