List the elements of the given set that are natural numbers, integers, rational numbers, and irrational numbers. (Enter your answers as commaseparated


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1 MATH 142 Review #1 ( ) Question Description This is the review for Exam #1. Please work as many problems as possible before we review inclass. As always, if you need anything, please me 1. Question Details SPreCalc MI. [ ] List the elements of the given set that are natural numbers, integers, rational numbers, and irrational numbers. (Enter your answers as commaseparated lists.) , 15, 10, 40,, 0.538, 7,, 7 3 natural numbers 3 2 integers (c) rational numbers (d) irrational numbers 2. Question Details SPreCalc MI. [ ] Find the indicated set if given the following. A = {x x 9} B = {x x < 7} C = {x 1 < x 8} A C { x 9 x < 7} { x 9 x 7} { x 1 < x 8} { x 1 x 8} none of these A B { x 9 x < 7} { x 9 x 7} { x 1 < x 8} { x 1 x 8} none of these
2 3. Question Details SPreCalc [ ] Simplify the expression and eliminate any negative exponent(s). 4a 2 b 7 2a 6 b 4 y 5x Question Details SPreCalc [ ] Simplify the expression and eliminate any negative exponent(s). Assume that all letters denote positive numbers. 7 x 4 y 2 14 x 6 y x 3 x 5. Question Details SPreCalc [ ] Factor the trinomial. 8x 2 77x Question Details SPreCalc MI. [ ] Factor the trinomial. (5x + 1) (5x + 1) Question Details SPreCalc [ ] Use a Special Factoring Formula to factor the expression. (x + 9) Question Details SPreCalc [ ] Use a Special Factoring Formula to factor the expression. 27x 3 + y 3 9. Question Details SPreCalc [ ] Factor the expression by grouping terms. 7x 3 + 6x 2 21x 18
3 10. Question Details SPreCalc MI. [ ] Find the domain of the expression. 1 x 1 x 1 x > 1 x 0 all real numbers x < Question Details SPreCalc [ ] Perform the addition or subtraction and simplify. 1 x x Question Details SPreCalc [ ] The given equation is either linear or equivalent to a linear equation. Solve the equation. (If there is no solution, enter NO SOLUTION. If all real numbers are solutions, enter REALS.) = x 1 x + 1 x 2 1 x = 7/5 13. Question Details SPreCalc MI. [ ] Solve the equation by factoring. (Enter your answers as a commaseparated list.) 6x(x 1) = 6 11x x = 14. Question Details SPreCalc [ ] Evaluate the function at the indicated values. (If an answer is undefined, enter UNDEFINED.) f(x) = x 2 6 f( 3) = f(3) = f(0) = 1 f = 2 f(10) = 15. Question Details SPreCalc [ ] Evaluate the function at the indicated values. (If an answer is undefined, enter UNDEFINED.) f(x) = 6x 2 + 4x 12 f(0) = f(2) = f( 2) = f( 2) = f(x + 1) = f( x) =
4 16. Question Details SPreCalc [ ] Evaluate the piecewise defined function at the indicated values. f(x) = x 2 if x < 0 x + 1 if x 0 f( 2) = 4 f( 1) = 1 f(0) = 1 f(1) = 2 f(2) = Question Details SPreCalc [ ] Use the Vertical Line Test to determine whether the curve is the graph of a function of x. (c) (d)
5 18. Question Details SPreCalc MI. [ ] Consider the following graph. Use the Vertical Line Test to determine whether the curve is the graph of a function of x. Yes, the curve of x. No, the curve of x. If the curve, state the domain and range. (Enter your answers using interval notation. If the curve enter NONE.) domain range 19. Question Details SPreCalc [ ] Consider the following graph. Use the Vertical Line Test to determine whether the curve is the graph of a function of x. Yes, the curve of x. No, the curve of x. If the curve, state the domain and range. (Enter your answers using interval notation. If the curve enter NONE.) domain range
6 20. Question Details SPreCalc MI. [ ] Determine whether the equation defines y as a function of x. (See Example 9.) x 2 + (y 8) 2 = Question Details SPreCalc [ ] Determine whether the equation defines y as a function of x. (See Example 9.) x 2 y + y = Question Details SPreCalc [ ] Fill in the blank with the appropriate axis (xaxis or yaxis). The graph of y = f(x) is obtained from the graph of y = f(x) by reflecting in the xaxis. The graph of y = f( x) is obtained from the graph of y = f(x) by reflecting in the yaxis. 23. Question Details SPreCalc [ ] Suppose the graph of f is given. Describe how the graph of each function can be obtained from the graph of f. y = 2f(x + 9) 8 shift left 9 units, stretch vertically by a factor of 2, then shift down 8 units shift left 9 units, stretch horizontally by a factor of 2, then shift down 8 units shift right 9 units, stretch horizontally by a factor of 2, then shift down 8 units shift right 9 units, stretch horizontally by a factor of 2, then shift up 8 units shift left 9 units, stretch vertically by a factor of 2, then shift up 8 units y = 2f(x 9) + 8 shift right 9 units, stretch horizontally by a factor of 2, then shift up 8 units shift right 9 units, stretch vertically by a factor of 2, then shift up 8 units shift left 9 units, stretch horizontally by a factor of 2, then shift up 8 units shift left 9 units, stretch horizontally by a factor of 2, then shift down 8 units shift right 9 units, stretch vertically by a factor of 2, then shift down 8 units
7 24. Question Details SPreCalc [ ] Suppose the graph of f is given. Describe how the graph of each function can be obtained from the graph of f. y = 2 7f(x) stretch vertically by a factor of 7, reflect about the xaxis, then shift down 2 units stretch vertically by a factor of 7 then shift down 2 units stretch horizontally by a factor of 7, reflect about the xaxis, then shift up 2 units stretch vertically by a factor of 7, reflect about the yaxis, then shift up 2 units stretch vertically by a factor of 7, reflect about the xaxis, then shift up 2 units y = 7 f( x) shift up 7 units, reflect about the xaxis, then reflect about the yaxis reflect about the xaxis, reflect about the yaxis, then shift right 7 units reflect about the xaxis, reflect about the yaxis, then shift up 2 units reflect about the xaxis, reflect about the yaxis, then shift up 7 units reflect about the xaxis, then shift up 7 units 25. Question Details SPreCalc [ ] True or false? If f has an inverse, then f 1 1 (x) is the same as. f(x) True False If f has an inverse, then f 1 (f(x)) = x. False True 26. Question Details SPreCalc [ ] A function f is given, and the indicated transformations are applied to its graph (in the given order). Write the equation for the final transformed graph. 4 f(x) = x; reflect in the yaxis and shift upward 5 units y = 27. Question Details SPreCalc [ ] A function f is given, and the indicated transformations are applied to its graph (in the given order). Write the equation for the final transformed graph. f(x) = x 2 ; shift 3 units to the left and reflect in the xaxis y =
8 28. Question Details SPreCalc [ ] The graph of a function f is given. Determine whether f is onetoone. is onetoone is not onetoone 29. Question Details SPreCalc [ ] The graph of a function f is given. Determine whether f is onetoone. is onetoone is not onetoone 30. Question Details SPreCalc [ ] Determine whether the function is onetoone. h(x) = x 2 3x is onetoone is not onetoone 31. Question Details SPreCalc [ ] Determine whether the function is onetoone. f(x) = 5x 2 is onetoone is not onetoone Assignment Details
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