100 câu trắc nghiệm giữa HK1 Toán 10 - KNTT - Đề 4

\(f\left( x \right)=3{{x}^{2}}+2x-5\) là tam thức bậc hai

\(f\left( x \right)=2x-4\) là tam thức bậc hai

\(f\left( x \right)=3{{x}^{3}}+2x-1\) là tam thức bậc hai

\(f\left( x \right)={{x}^{4}}-{{x}^{2}}+1\) là tam thức bậc hai

\(\Delta <0\)

\(\Delta =0\)

\(\Delta >0\)

\(\Delta \ge 0\)

\(x\in \left( -\infty ;\,-1 \right]\cup \left[ 5;\,+\infty \right)\)

\(x\in \left[ -1;\,5 \right]\)

\(x\in \left[ -5;\,1 \right]\)

\(x\in \left( -5;\,1 \right)\)

\(\left( -\infty ;0 \right]\)

\(\left[ 6;+\infty \right)\)

\(\left[ 8;+\infty \right)\)

\(\left( -\infty ;-1 \right]\)

\(S=\left( -\infty ;2 \right]\cup \left[ 5;+\infty \right)\)

\(S=\left( -\infty ;2 \right)\cup \left( 5;+\infty \right)\)

\(S=\left( 2;5 \right)\)

\(S=\left[ 2;5 \right]\)

\(S=\left( -5;5 \right)\)

\(x>\pm \,5\)

\(-5<x<5\)

\(S=\left( -\infty ;-5 \right)\cup \left( 5;+\infty \right)\).

\(\left( 1;2 \right)\)

\(\left( -\infty ;1 \right)\cup \left( 2;+\infty \right)\)

\(\left( -\infty ;1 \right)\)

\(\left( 2;+\infty \right)\)

\(S=\left( -\infty ;-3 \right)\cup \left( 2:+\infty \right)\)

\(\left[ -2;3 \right]\)

\(\left[ -3;2 \right]\)

\(\left( -\infty ;-3 \right]\cup \left[ 2;+\infty \right)\)

\(\left( -\infty ;-1 \right)\cup \left( 3;+\infty \right)\)

\(\left( -1;3 \right)\)

\(\left[ -1;3 \right]\)

\(\left( -3;1 \right)\)

\(\left( -\infty ;-\sqrt{3} \right)\cup \left( \sqrt{3};+\infty \right)\)

\(\left( -\infty ;-\sqrt{3} \right]\cup \left[ \sqrt{3};+\infty \right)\backslash \left\{ \frac{7}{4} \right\}\)

\(\left( -\infty ;-\sqrt{3} \right)\cup \left( \sqrt{3};+\infty \right)\backslash \left\{ \frac{7}{4} \right\}\)

\(\left( -\infty ;-\sqrt{3} \right)\cup \left( \sqrt{3};\frac{7}{4} \right)\)

\(\left( -\infty ;\,\frac{1}{2} \right]\cup \left[ 2;\,+\infty \right)\)

\(\left[ 2;\,+\infty \right)\)

\(\left( -\infty ;\,\frac{1}{2} \right]\)

\(\left[ \frac{1}{2};\,2 \right]\)

\(S=\left( -\infty \,;\,1 \right]\cup \left[ 6;+\infty \right).\)

\(S=\left[ 6;+\infty \right).\)

\(\left( 6;+\infty \right).\)

\(S=\left[ 6;+\infty \right)\cup \left\{ 1 \right\}.\)

\(\left( 1;4 \right)\)

\(\left( -2;-1 \right)\)

\(\left( 1;2 \right)\)

\(\left( -2;-1 \right)\cup \left( 1;2 \right)\)

\(x\le 1.\)

\(1\le x\le 4.\)

\(x\in \left( -\,\infty ;1 \right]\cup \left[ 4;+\infty \right).\)

\(x\ge 4.\)

\(-4\le m\le 4\)

\(m\le -4\ \ hay\ \ m\ge 4\)

\(m\le -2\ \ hay\ \ m\ge 2\)

\(-2\le m\le 2\)

\(0 < m < 16\)

\(-4 < m < 4\)

\(0 < m < 4\)

\(0\le m\le 16\)

\(m>1.\)

\(-\,3 < m < 1.\)

\(m\le -\,3\) hoặc \(m\ge 1.\)

\(-\,3\le m\le 1.\)

\(b\in \left[ -\,2\sqrt{3};2\sqrt{3} \right].\)

\(b\in \left( -\,2\sqrt{3};2\sqrt{3} \right).\)

\(b\in \left( -\,\infty ;-\,2\sqrt{3} \right]\cup \left[ 2\sqrt{3};+\,\infty \right).\)

\(b\in \left( -\,\infty ;-\,2\sqrt{3} \right)\cup \left( 2\sqrt{3};+\,\infty \right).\)

\(\overrightarrow{{{u}_{1}}}=\left( \text{1};0 \right)\)

\(\overrightarrow{{{u}_{2}}}=\left( 0;-\text{1} \right).\)

\(\overrightarrow{{{u}_{3}}}=\left( -\text{1};1 \right).\)

\(\overrightarrow{{{u}_{4}}}=\left( \text{1};\text{1} \right).\)

\(\overrightarrow{{{u}_{1}}}=\left( -1;2 \right).\)

\(\overrightarrow{{{u}_{2}}}=\left( 2;1 \right).\)

\(\overrightarrow{{{u}_{3}}}=\left( -2;6 \right).\)

\(\overrightarrow{{{u}_{4}}}=\left( 1;1 \right).\)

\(\overrightarrow{{{n}_{1}}}=\left( 2;-2 \right).\)

\(\overrightarrow{{{n}_{2}}}=\left( \text{2};-\text{1} \right).\)

\(\overrightarrow{{{n}_{3}}}=\left( 1;1 \right).\)

\(\overrightarrow{{{n}_{4}}}=\left( 1;-2 \right).\)

\(\overrightarrow{{{n}_{1}}}=\left( -a;b \right).\)

\(\overrightarrow{{{n}_{2}}}=\left( 1;0 \right).\)

\(\overrightarrow{{{n}_{3}}}=\left( b;-a \right).\)

\(\overrightarrow{{{n}_{4}}}=\left( a;b \right).\)

\(\left\{ \begin{align} & x=7 \\ & y=3+5t \\ \end{align} \right..\)

\(\left\{ \begin{align} & x=3-5t \\ & y=-7 \\ \end{align} \right..\)

\(\left\{ \begin{align} & x=7+t \\ & y=3 \\ \end{align} \right..\)

\(\left\{ \begin{align} & x=2 \\ & y=3-t \\ \end{align} \right..\)

\(d:x+2y+4=0.\)

\(d:x-2y-5=0.\)

\(d:-2x+4y=0.\)

\(d:x-2y+4=0.\)

\(3x+2y+6=0\)

\(-2x+3y+17=0\)

\(3x+2y-6=0\)

\(3x-2y+6=0\)

\(5x+y+3=0\)

\(5x+y-3=0\)

\(x+5y-15=0\)

\(x-15y+15=0\)

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\({{30}^{\text{o}}}.\)

\({{45}^{\text{o}}}.\)

\({{60}^{\text{o}}}.\)

\({{135}^{\text{o}}}.\)

\(\frac{\pi }{4}\)

\(\frac{\pi }{3}\)

\(\frac{2\pi }{3}\)

\(\frac{3\pi }{4}\)