Examlex
Find the sum of the series.
-
Parabola
The graph of a quadratic function, a U-shaped curve that can open upwards or downwards, determined by the function's coefficients.
Focus
A point used in the definitions of conic sections, such as ellipses and hyperbolas, that helps to define their shapes.
Semicircular Arch
An arch that forms half of a circle and is often used in architectural designs.
Diameter
A straight line segment passing through the center of a circle or sphere and terminating on both sides of the perimeter, effectively measuring the largest distance across the shape.
Q18: <span class="ql-formula" data-value="9 x ^ { 2
Q43: <span class="ql-formula" data-value="( - \sqrt { 5
Q98: <span class="ql-formula" data-value="( x - 6 )
Q141: If <span class="ql-formula" data-value="f (
Q209: <span class="ql-formula" data-value="49 x ^ { 2
Q263: Which of the following is not
Q323: Inside the six-leaved rose <span
Q325: <span class="ql-formula" data-value="x = 7 \sin ^
Q348: <span class="ql-formula" data-value="\sum _ { n =
Q386: <span class="ql-formula" data-value="y=-2 \sqrt{x}"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>y</mi><mo>=</mo><mo>−</mo><mn>2</mn><msqrt><mi>x</mi></msqrt></mrow><annotation