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# Evaluating negative limits in integrals- C2? watch

1. Question: Integrate 1/7 x ^ 1/3 +1 with respect to x between -3 and 4.7
The general antiderivative is 3/28 (x ^ 4/3) + x.
But when I try to work out -3 ^ 4/3 on my calculator I get a syntax error even though it is a TI-84 with complex number capacity. How would you actually work it out?
2. (Original post by ScheduleII)
Question: Integrate 1/7 x ^ 1/3 +1 with respect to x between -3 and 4.7
The general antiderivative is 3/28 (x ^ 4/3) + x.
But when I try to work out -3 ^ 4/3 on my calculator I get a syntax error even though it is a TI-84 with complex number capacity. How would you actually work it out?
THe power of a negative number is interpreted by calculator for only integer exponent. See (-1)^(1/3).
Try (-3)^4 first then the cubic root.

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