Algebra2
posted by Unknown on .
Check?
25. f(x)= x^21 ; 3, 2, 1, 0, 1, 2 ,3
=
f(x); 3^21=10
f(x) ; 2^21=5
f(x) ; 1^21=2
f(x) ; 0^21=1
f(x) ; 1^21=0
f(x) ; 2^21=3
f(x) ; 3^21=8
26. g(x); √(x+1)2 ; x+1, 0, 3, 8
g(x) ; √(1+1)2=2
g(x) ; √(0+1)2=1
g(x) ; √(3+1)2=4
g(x) ; √(8+1)2=1
27. h(x)= x3 ; x=0,1,2,3,4,5,6
h(x); 03 =3
h(x); 13=4
h(x); 23=5
h(x); 43=7
h(x); 53=8
h(x); 63=9

25.
all squares are positive
thus f(3) = (3)^21 = 91 = 8
3^2 = 9, but (3)^2 = +9
when substituting in for x, to avoid mistakes, always enclose the value in ().
26.
f(3) = √(3+1)2 = √4  2 = 22 = 0
27.
x = x if x<0
x = x if x >= 0
so, 13 = 2 = 2, not 4
do the addition first, then the .
Treat the  like special parentheses, or treat x like a function abs(x), so all the inside stuff is done first
13 = 2
1 + 3 = 1+3 = 4