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If f(x) = `int_0^x(e^t+3)dt`, then which of the following is always true `AAx inR` ?
A. |
ƒ(x+3) – ƒ(x–1) `<=` 11 |
B. |
ƒ(x+1) – ƒ(x–1) < 4 |
C. |
ƒ(x+3) – ƒ(x–5) > 24 |
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D. |
ƒ(x) + ƒ(x+1) < 21 |