Exercises 73–80, find the difference quotientand simplify your answer.73. f(x) = x2 − 2x + 4, f(2 + h) − f(2)h , h ≠ 074. f(x) = 5x − x2, f(5 + h) − f(5)h , h ≠ 075. f(x) = x3 + 3x, f(x + h) − f(x)h , h ≠ 076. f(x) = 4x3 − 2x, f(x + h) − f(x)h , h ≠ 077. g(x) = 1x2, g(x) − g(3)x − 3 , x ≠ 378. f(t) = 1t − 2, f(t) − f(1)t − 1 , t ≠ 179. f(x) = √5x, f(x) − f(5)x − 5 , x ≠ 580. f(x) = x23 + 1, f(x) − f(8)x − 8 , x ≠ 8
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Exercises 73–80, find the difference quotient
and simplify your answer.
73. f(x) = x2 − 2x + 4, f(2 + h) − f(2)
h , h ≠ 0
74. f(x) = 5x − x2, f(5 + h) − f(5)
h , h ≠ 0
75. f(x) = x3 + 3x, f(x + h) − f(x)
h , h ≠ 0
76. f(x) = 4x3 − 2x, f(x + h) − f(x)
h , h ≠ 0
77. g(x) = 1
x2, g(x) − g(3)
x − 3 , x ≠ 3
78. f(t) = 1
t − 2
, f(t) − f(1)
t − 1 , t ≠ 1
79. f(x) = √5x, f(x) − f(5)
x − 5 , x ≠ 5
80. f(x) = x23 + 1, f(x) − f(8)
x − 8 , x ≠ 8
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