Functions Flashcards
1
Q
f(x)=x+3
g(x)=x(power 2)-1
Find fo g(x)
f g(x)
A
fo g(x)=x(power 2)+2
go f(x)=x(power 2)+6x+8
2
Q
x(pwr2)-8x-3=0
A
4,-19 (min turning point)
3
Q
3x(pwr2)-12x+10
A
2,-2 (min turning point)
4
Q
-x(pwr2)+6x-10
A
3,-1 (max turning point)
5
Q
f(x)=x(pwr2)-5x+4
Find nature of roots
A
9>0
Real and distinct
6
Q
f(x)=x(pwr2)-4x+4
A
0=0
Real and equal
7
Q
f(x)=x(pwr2)-4x+7
A
-17<0
Imaginary
8
Q
Inverse function
f(x)=3x-2
A
x+2=f(pwr-1)(x)
3 .
