Precalc Ch 2 Formative #1

Find f(0) if

 $f\left(x\right)=23x^2-8x-100$  

Find f(-2) if $f\left(x\right)=3x^2+x$  

 $Find\ \ f(-a+h)\ \ if\ \ \ \ \ \ \ \ f\left(x\right)=x^2-ax$  

•  $2a^2-3ah+h^2$  

•  $-3ah+h^2$  

•  $-2ah+h^2$  

•  $a^2-3ah+h^2$  

Find the domain of $f\left(x\right)=\frac{1}{x-2}$  

• 2

• All Real Numbers

•  $\left(-\infty,\ 2\right)U\left(2,\ \infty\right)$  

•  $\left(-\infty,2\right]\ U\ \left[2,\ \infty\right)$  

Find the domain of $f\left(x\right)=_3\sqrt{x}$   

(the third root of x)

• All Real Numbers

•  $\left(-\infty,0\right]$  

•  $\left[0,\infty\right)$  

 $f\left(x\right)=\sqrt{2x-2}$  

Find the domain of

•  $\left[1,\infty\right]$  

•  $\left[1,\infty\right)$  

•  $\left(1,\infty\right)$  

•  $\left(-\infty,1\right]$  

Evaluate f(1) using the following piecewise function:

 $-x^2\ \ \ \ \ \ \ if\ \ \ \ \ \ \ x\ge2$  
 $x\ \ \ \ \ \ if\ \ \ \ \ \ \ \ \ \ 2>\ x>1$ 
 $x-1\ \ \ \ \ \ \ if\ \ \ \ \ \ \ x\ \le1$  

• 1

• 0

• -1

Evaluate f(-10) using the following piecewise function:

 $-x^2\ \ \ \ \ \ \ if\ \ \ \ \ \ \ x\ge2$  
 $x\ \ \ \ \ \ if\ \ \ \ \ \ \ \ \ \ 2>\ x>1$ 
 $x-1\ \ \ \ \ \ \ if\ \ \ \ \ \ \ x\ \le1$  

• -11

• -10

• -100

Evaluate f(10) using the following piecewise function:

 $-x^2\ \ \ \ \ \ \ if\ \ \ \ \ \ \ x\ge2$  
 $x\ \ \ \ \ \ if\ \ \ \ \ \ \ \ \ \ 2>\ x>1$ 
 $x-1\ \ \ \ \ \ \ if\ \ \ \ \ \ \ x\ \le1$  

• 9

• 10

• -100

• a

• b

• c

• d