For 3 and 4, a and b are constants (with a, b nonzero in 4). Your answers should involve a and/or b, except for 4b. 3. (a) If ab, determine 1 (x + a)(x + b) dz.

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Q: Verify that f and g are inverse functions. 11. f(x) = x + 6, g(x)= x - 6

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