Math 2-Unit 4Test Review

Name KSY-Date, Period 1

-t{-Il-}.a~

13. (-2a3b7c-2r~-.(JQ b t 14.~

~BI ~ ri,3.; b

16. (7X3y')' "'ill

i=[I= I~I

20. 4.8x107

2.1xlO-S -10,21 X IOI~

23. Gf {t)~1'~JqI

6. ((SX2yZ')')' =JIl•

18. ~-...;,.....

f(x)=x2-5For #25-30: g(x) = 2x + 1

hex) = 3x

25. f(x) +g(x)XJ. - :l,X+ (

x'J.+lX --tf

31. State the domainfor #25. __ 1R;......1---,....-.-- _32. State the domainfor #26. 1_R~~~--33. State the domainfor #30. 1)..L.!.R~)I-"X.=......iL..-..l:lt.o-

f(x)=x2+2

For #34-39: g(x) = -4x3

hex) = 2X2

27. h(f(x)) :: 30'= 5' ).Q x~-/a

/ "1. 2.38. h(h(x)). (-l~

s: ( tf X if) ::~37. f(x) + g(x) ~ \X :2...\-~.+- .•.L{ y.. )- LJ't3+)(~+;L

40. ate f e om· or #34. __ \K~r-- _41. State the domainfor #37. __ ,...:......;.)l~=-- _42. State the domainfor #39. ..!..JlR~ _

39. h(x)- f(x)J( z. C5:}2))( ;Z_cl

Find f-1 (x) for the following functions:

45. f(x) = 17xX s: j]..

-t yIi ....l c '/$

)I 1t'r-\ 1y ;: 7 "1"(1,() ~jr

48. f(x) = x3 -8 .x_~3_g

fx.;lf -== (if:y+(~}= yx~§

53. f(x) = 8+2x2, X s 0

54. Whedou find tre inverse of a function, the range of the original function becomesthe oY\t\(t( Vl of the inverse funct'ion.-

52. f(x) = x5 e:~-;;:J=r-( -srr:-+ eX) -s Y X

Graph the function f. Then use the graph to determine whether the inverse of f is afunction.55 56. f(x) = x2-1f(x) = -5x + '?tn.

n-

t\'"\

)

- 1,-1 n _R - . .D , 1T-., ~

., \I i I \ !

I r: I II I I ,v , ,

io 1\IV \In '\v. •

~ .n' 'I'-, IV, 10IV

\ I'\ I

'-1\ ..., ~ *\~ ~.~ " --1 n _R - - _ J. 1"\ J 1iJ"'"h .•I~ , -

j I, !-I i II I I

i I0

Iv

I

I n Iv••

Is the inverse a function? y e.5Does it pass the one to one test? ~ e,S

Is the inverse a function? --------

Does it pass the one to one test? ~---=C=----_-:-CD,· I) (0,1) U,") (1,,2) (gl ~)Lg,·3>

Consider the relations described by the following ordered pairs. a- state the domainb-Give the inverse of the function _ L-/ b '-I ] (J. - LI) (-'Is:) ( I) Y )57. (-4,2), (5, -7), (4,1) a. b. _--..:./ ---,

Q. [-l,- S f b. (4 ,- 2.~l-71-l)( I J -'0)58. (-2,4), (-2, -7), (-5, 1)