A parabola is the graph of a quadratic function y = ax2+ bx + c. We obtain the quadratic equation of best fit by using quadratic regression (STAT/CALC/5:QuadReg/VARS/Y-VARS/1:Function/1;Y1/ENTER). Note that r2 = .997 here, so we expect a very good fit: y = .402x2− ...
Quadratic function: A quadratic function is given by the general equation {eq}f(x)=ax^2+bx+c {/eq}. The previous equation can be written in vertex form as {eq}f(x)=a(x-h)^2+k {/eq} where {eq}(...
The function is linear, of the form f(x) = mx+b . b. The function is quadratic, of Find the values of x at which the function f(x) = \left\{\begin{matrix} x+2 & x\lt 0 \\ 2x^2 & 0 \leq x \leq 1\\ 2-x &...