A.\[{c^2} = {a^2} + {b^2}\]
b. \[{b^2} = {a^2} + {c^2}\]
C. \[{a^2} = {b^2} + {c^2}\]
D. \[c = a + b\]
A.\[\frac{1}{{\sqrt 2 }}\]
B. \[\frac{2}{{\sqrt 2 }}\]
C. \[\frac{1}{3}\]
D. 1
A.\[2a = {F_1}{F_2}\]
B. \[2a >{F_1}{F_2}\]
C. \[2a < {F_1}{F_2}\]
D. \[4a = {F_1}{F_2}\]
A.1 và 2
B.2 và 3
C.1 và 3
D.4 và 1
A.\[\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{36}} = 1\]
B. \[\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{64}} = 1\]
C. \[\frac{{{x^2}}}{{400}} + \frac{{{y^2}}}{{256}} = 1\]
D. \[\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{49}} = 1\]
A.\[\frac{{{x^2}}}{{36}} + \frac{{{y^2}}}{{16}} = 1\]
B. \[\frac{{{x^2}}}{{144}} + \frac{{{y^2}}}{{64}} = 1\]
C. \[\frac{{{x^2}}}{{12}} + \frac{{{y^2}}}{8} = 1\]
D. \[\frac{{{x^2}}}{{16}} + \frac{{{y^2}}}{{36}} = 1\]
A.\[\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{16}} = 1\]
B. \[\frac{{{x^2}}}{{64}} + \frac{{{y^2}}}{{25}} = 1\]
C. \[\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{64}} = 1\]
D. \[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{{16}} = 1\]
A.\[\frac{{{x^2}}}{5} + \frac{{{y^2}}}{3} = 1\]
B. \[\frac{{{x^2}}}{{100}} + \frac{{{y^2}}}{{36}} = 1\]
C. \[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{9} = 1\]
D. \[\frac{{{x^2}}}{{10}} + \frac{{{y^2}}}{6} = 1\]
A.\[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{{16}} = 1\]
B. \[\frac{{{x^2}}}{5} + \frac{{{y^2}}}{4} = 1\]
C. \[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{9} = 1\]
D. \[\frac{x}{5} + \frac{y}{4} = 1\]
A.\[\frac{{{x^2}}}{{24}} + \frac{{{y^2}}}{{25}} = 1\]
B. \[\frac{{{x^2}}}{{24}} + \frac{{{y^2}}}{{25}} = - 1\]
C. \[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{{24}} = 1\]
D. \[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{{24}} = - 1\]Trả lời:
A.\[\frac{{{x^2}}}{{16}} + \frac{{{y^2}}}{9} = 1\]
B. \[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{9} = 1\]
C. \[\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{{16}} = 1\]
D. \[\frac{{{x^2}}}{{36}} + \frac{{{y^2}}}{{16}} = 1\]
A.\[\frac{{{x^2}}}{7} + \frac{{{y^2}}}{2} = 1\]
B.\[\frac{{{x^2}}}{{20}} + \frac{{{y^2}}}{4} = 1\]
C. \[\frac{{{x^2}}}{4} + \frac{{{y^2}}}{1} = 1\]
D. \[\frac{{{x^2}}}{9} + \frac{{{y^2}}}{4} = 1\]
A.\[\frac{{{x^2}}}{4} + \frac{{{y^2}}}{1} = 1\]
B. \[\frac{{{x^2}}}{4} + \frac{{{y^2}}}{2} = 1\]
C. \[\frac{{{x^2}}}{9} + \frac{{{y^2}}}{4} = 1\]
D. \[\frac{{{x^2}}}{9} + \frac{{{y^2}}}{1} = 1\]
A.\[\frac{{{x^2}}}{4} + \frac{{{y^2}}}{1} = 1\]
B. \[\frac{{{x^2}}}{9} + \frac{{{y^2}}}{4} = 1\]
C. \[\frac{{{x^2}}}{9} + \frac{{{y^2}}}{1} = 1\]
D. \[\frac{{{x^2}}}{{16}} + \frac{{{y^2}}}{9} = 1\]Trả lời:
A.\[{y_M} \in \left( {0;\sqrt 3 } \right)\]
B. \[{y_M} \in \left( {2;\sqrt 8 } \right)\]
C. \[{y_M} \in \left( {\sqrt 8 ;5} \right)\]
D. \[{y_M} \in \left( {\sqrt 3 ;2} \right)\]
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