Question

Draw the graph of quadratic function f(x)=ax2+bx+c. from
the graph find maximum / minimum
value of the function. Also determine
the sign of the expression. please do it in all possible steps please do it fast!!! help a girl in desperate need !

Answer 1

Answer:

I hope it help you.......

Answer 2

We recall the concept of quadratic equation.

Quadratic equation is that polynomial equation which has degree $2$

Given:

We take $f(x)=2x^{2} +5x-7$

We plot the graph as shown in figure.

Hence minima of a function is $-10$ as shown in graph