PT1 solutions

# PT1 solutions - PRACTICE TEST 1 1. Find the inverse...

This preview shows pages 1–2. Sign up to view the full content.

PRACTICE TEST 1 1. Find the inverse function, ( 29 1 f x - of ( 29 2 f x x = - + ( 29 ( 29 1 2 2 1 2 ; 2 : 0 2 ; 2 , 0 0 f f x x y x y NOTE x x y y x f x x D x - - = - + = = - + = + = - = = 2. Find the natural domain [give answers in interval notation where reasonable]: a) the functions 1 and f f - given in problem 1. 1 1 2, 2 ; 0, 0 f f f f D x R y R y D x - - = ≥ - = ≥ - = = b) ( 29 2 3 9 x g x x - = + ( 29 , g D all real numbers = -∞ +∞ = c) ( 29 { } 2 1 ; | 2, 2 4 h h x D x x x = = - - d) ( 29 2 1 r x x = - USE A SIGN GRAPH Put – 1 and 1 on the sign graph, then find that ( 29 ( 29 1 1 x x + - is negative if x < - 1 or x > 1, so { } | 1 1 r D x x = - ≤ 3. Find the equation of the line passing through the point (4, -2) and perpendicular to the line 2 3 4 x y - = . Write the answer in slope-intercept form. Solve for y, getting 2 4 3 3 y x = - , so the slope of this is 2/3, hence for the perpendicular, its – 3/2] So the equation of the perperpendicular through (4, - 2) is

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 12/26/2011 for the course MAC 2311 taught by Professor Staff during the Fall '08 term at FIU.

### Page1 / 3

PT1 solutions - PRACTICE TEST 1 1. Find the inverse...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online