Đề thi giữa học kì 2 Toán 10 - Đề số 2

$x = y^{2}$.

$y = x^{2}$.

$x = |y|$.

$x^{2} + y^{2} = 2$.

$\left( {1; + \infty} \right)$.

$\left( {- \infty;1} \right\rbrack$.

$\left\lbrack {1; + \infty} \right)$.

$R\backslash\left\{ 1 \right\}$.

$y = x^{2} + x.$

$y = \dfrac{1}{x^{2}}.$

$y = \dfrac{x^{2} + 1}{x}.$

$y = x^{3} + x + 1.$

x = 2.

x = -2.

x = 4.

x = -4.

$f(x) \gt 0,\forall x \in \left( {1;3} \right)$.

$f(x) \gt 0,\forall x \in \left( {1; + \infty} \right)$.

$f(x) \gt 0,\forall x \in \left( {3; + \infty} \right)$.

$f(x) \gt 0,\forall x \in \left( {- \infty;1} \right)$.

$x \in \left( {- \infty;1} \right) \cup \left( {2; + \infty} \right)$.

$x \in \left( {- \infty;1} \right\rbrack \cup \left\lbrack {2; + \infty} \right)$.

$x \in \left( {1;2} \right)$.

$x \in \left\lbrack {1;2} \right\rbrack$.

$S = \left( \left. {- \infty; - 3} \right\rbrack \right. \cup \left\lbrack \left. {2; + \infty} \right) \right.$.

$S = \left\lbrack {- 3;2} \right\rbrack$.

$S = \left( {- 3;2} \right)$.

$S = \left( {- \infty; - 3} \right) \cup \left( {2; + \infty} \right)$.

4.

6.

5.

1.

$\overset{\rightarrow}{u} = \left( {4;3} \right).$

$\overset{\rightarrow}{u} = \left( {3;4} \right).$

$\overset{\rightarrow}{u} = \left( {1; - 2} \right).$

$\overset{\rightarrow}{u} = \left( {- 4;3} \right).$

$\dfrac{x}{3} - \dfrac{y}{5} = 1.$

$- \dfrac{x}{3} + \dfrac{y}{5} = 0.$

$\dfrac{x}{5} - \dfrac{y}{3} = 1.$

$- \dfrac{x}{3} + \dfrac{y}{5} = 1.$

2x + 3y + 1 = 0.

2x – y + 1 = 0.

2x – 4y – 2 = 0.

x – 2y + 1 = 0.

$5$.

$\dfrac{14\sqrt{53}}{53}$.

$\dfrac{10}{53}$.

$\dfrac{19\sqrt{53}}{53}$.