A

9000065503

Level: 
A
Evaluate the following integral on the interval \((0;+\infty)\). \[ \int (4x^{-3} - x^{-4})\, \mathrm{d}x \]
\(- 2x^{-2} + \frac{1} {3}x^{-3} + c,\ c\in \mathbb{R}\)
\(-\frac{4} {3}x^{-2} -\frac{1} {3}x^{-3} + c,\ c\in \mathbb{R}\)
\(-\frac{3} {4}x^{-4} -\frac{1} {5}x^{-5} + c,\ c\in \mathbb{R}\)
\(- 12x^{2} + 4x^{-3} + c,\ c\in \mathbb{R}\)

9000065610

Level: 
A
Using definite integral find the area of the triangle defined by the following three inequalities \[ \begin{aligned}y& > 0, & \\y& < x + 3, \\y& < 3 - x. \\ \end{aligned} \]
\(\int _{-3}^{0}(x + 3)\, \mathrm{d}x +\int _{ 0}^{3}(3 - x)\, \mathrm{d}x\)
\(\int _{0}^{3}(x + 3)\, \mathrm{d}x\)
\(\int _{-3}^{3}(3 - x)\, \mathrm{d}x\)
\(\int _{-3}^{0}(3 - x)\, \mathrm{d}x +\int _{ 0}^{3}(x + 3)\, \mathrm{d}x\)

9000065509

Level: 
A
Given the function \[ F(x) = x + \frac{9} {2}x^{2} + 9x^{3} + \frac{27} {4} x^{4}, \] find the function \(f\) such that \(F\) is primitive to \(f\) on \(\mathbb{R}\).
\(f(x) = (1 + 3x)^{3}\)
\(f(x) = (1 + 3x)^{2}\)
\(f(x) = 1 + 3x + 3x^{2} + 3x^{3}\)
\(f(x) = (1 + 3x)^{4}\)