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Q11: <span class="ql-formula" data-value="\frac{x^{2}}{4}-\frac{y^{2}}{25}=1"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mfrac><msup><mi>x</mi><mn>2</mn></msup><mn>4</mn></mfrac><mo>−</mo><mfrac><msup><mi>y</mi><mn>2</mn></msup><mn>25</mn></mfrac><mo>=</mo><mn>1</mn></mrow><annotation encoding="application/x-tex">\frac{x^{2}}{4}-\frac{y^{2}}{25}=1</annotation></semantics></math></span><span
Q18: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7897/.jpg" alt=" A)
Q43: Center at (0, 0); focus at
Q47: <span class="ql-formula" data-value="\log _ { 2 }
Q66: When students at the local university held
Q69: <span class="ql-formula" data-value="f ( x ) =
Q81: <span class="ql-formula" data-value="f(x)=e^{x-5}"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>f</mi><mo stretchy="false">(</mo><mi>x</mi><mo
Q185: <span class="ql-formula" data-value="\begin{array}{l}y-x \leq 5 \\x+y \geq
Q207: x + y = 0 2x +