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1. If f ( x ) = โ x^2 โ x โ 4 , find f (โ2), f (0), and f ( 4 ). (If an answer is undefined, enter UNDEFINED.) f (โ2) (^) = -6 - f (0) (^) = -4 - f ( 4 ) (^) = -24 - 2. The function f is defined by x^2 1 + 2 x Compute the following: (IMPORTANT: Provide exact expressions, not decimal approximations.) f(2) + f(3) = f(2 + 3) = 3. Let f(x) = 4x^2 + 1. Express the following function values in terms of x. f(x + 3) = f(x) + 3 = 4. Let f(x) = 2x^2 + 9. Express f(x + 3) in terms of x. f(x + 3) = Practice Another Version Practice Another Version Practice Another Version Practice Another Version
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5. Let f ( x ) = 8 x^2 + 4. Evaluate f 1 + 6 IMPORTANT: Provide an exact expression, not a decimal approximation. The Calcpad will help you enter square roots and exponents--it appears as you click in the answer box. Recall WebAssign does not require you to simplify. f 1 + 6 = 6. Let f ( x ) = x x + 7
. Which one of the following is equal to f ( x^2 โ 2 )? x^2 โ 2 x^2 + 9 x^2 โ 2 x + 7 ( x โ 2 )^2 x^2 + 5 7.8.33/8.33 points | Previous AnswersMy Notes If a is a positive real number, find the following value for the function given below. g (โ a ) = Practice Another Version Practice Another Version x^2 โ 2 x^2 + 5 x^2 + 7 x^2 + 5
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Take the square root of the number and add 7 more than the number you started with. Square the result and add 5 more than the original number. Finally, divide the result by 9 more than the square of the original number. Write a formula for f(x). f(x) = 10. Express the number in the form a / b , where a and b are integers. 4 โ 3 โ 9/ 11. Express the number in the form a / b , where a and b are integers. โ5^2 + 2 โ -49/2 -49/ 12. Simplify completely. (โ2 xy^2 )^3 x^7 4 y^2 Practice Another Version Practice Another Version Practice Another Version Practice Another Version
