9000010606
Level:
A
Identify a function which is increasing on
\((-1;3)\).
\(f(x) = (x + 2)^{2}\)
\(f(x) = x^{2} + x\)
\(f(x) = x^{2} - x\)
\(f(x) = (x - 2)^{2}\)
\(f(x) = -x^{3}\)
\(f(x) = x^{2} + 1\)
A
9000011103
Level:
A
In the following list identify an increasing function.
\(f(x) = x^{5}\)
\(f(x) = x^{2}\)
\(f(x) = x^{-3}\)
\(f(x) = x^{-4}\)
\(f(x) = 2x^{0}\)
9000010607
Level:
A
Identify a function which is one-to-one on the interval
\([ - 2;2] \).
\(f(x) = x^{3} - 2\)
\(f(x) = x^{2} - 2\)
\(f(x) = -x^{2} + 2\)
\(f(x) = x^{-2} + 2\)
\(f(x) = \frac{1}
{x} - 2\)
\(f(x) = x^{4}\)
9000009908
Level:
A
Consider a function
\[
f(x) = \frac{-3}
{x}
\]
defined on the domain \(\mathrm{Dom}(f) =\mathbb{R}\setminus \{ - 1.0\}\).
Find the range of this function.
\(\mathbb{R}\setminus \{0.3\}\)
\(\mathbb{R}\setminus \{0\}\)
\(\mathbb{R}\setminus \{ - 3.0\}\)
\(\mathbb{R}\)
9000010501
Level:
A
For \(x\in \mathbb{R}\),
\(x > 0\),
simplify the following expression.
\[
\root{3}\of{x^{5}}
\]
\(x\root{3}\of{x^{2}}\)
\(x^{2}\root{3}\of{x^{2}}\)
\(x^{3}\root{3}\of{x^{2}}\)
\(x^{2}\root{5}\of{x^{3}}\)
9000010502
Level:
A
For \(x\in \mathbb{R}\),
\(x > 0\),
simplify the following expression.
\[
\root{3}\of{x^{5}}\cdot \root{3}\of{x^{4}}
\]
\(x^{3}\)
\(\root{3}\of{x^{12}}\)
\(\root{3}\of{x}\)
\(x\root{3}\of{x^{4}}\)
9000010504
Level:
A
For \(x\in \mathbb{R}\),
\(x > 0\),
simplify the following expression.
\[
\root{3}\of{x^{2}} : \root{3}\of{x}
\]
\(\root{3}\of{x}\)
\(x\)
\(1\)
\(\root{9}\of{x}\)
9000010507
Level:
A
For \(x\in \mathbb{R}\),
\(x > 0\),
simplify the following expression.
\[
x^{3} : \root{}\of{x}
\]
\(x^{2}\root{}\of{x}\)
\(x^{3}\root{}\of{x}\)
\(\root{}\of{x^{3}}\)
\(\root{6}\of{x}\)
9000013505
Level:
A
Write the number \(3\root{3}\of{3}\)
in an equivalent form involving just radical of a single number or radical of a single
power.
\(\root{3}\of{81}\)
\(\sqrt{9}\)
\(\root{3}\of{27}\)
\(\root{3}\of{3^{2}}\)
9000013506
Level:
A
Write the number \(\root{3}\of{16000}\)
in an equivalent form with smallest possible number under the radical.
\(20\root{3}\of{2}\)
\(10\root{3}\of{4}\)
\(100\root{3}\of{2}\)
\(4\root{3}\of{10}\)