Find x2 3x 5 dx - JAMB Mathematics 2017 Question
Find ∫(x2 + 3x − 5)dx
A
\(\frac{x_3}{3}\) - \(\frac{3x_2}{2}\) - 5x + k
B
\(\frac{x_3}{3}\) - \(\frac{3x_2}{2}\) + 5x + k
C
\(\frac{x_3}{3}\) + \(\frac{3x_2}{2}\) - 5x + k
D
\(\frac{x_3}{3}\) + \(\frac{3x_2}{2}\) + 5x + k
correct option: c
∫xndx = (\frac{x_{n + 1}}{n + 1})
∫dx = x + k
where k is constant
∫(x2 + 3x − 5)dx
∫x2 dx + ∫3xdx − ∫5dx
(\frac{2_{2 + 1}}{2 + 1}) + (\frac{3x^{1 + 1}}{1 + 1}) − 5x + k
(\frac{x_3}{3}) + (\frac{3x_2}{2}) − 5x + k
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