- #1
homeworkhelpls
- 41
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i integrated y to get (1/3x^3 + 2x) with upper limit 5 / lower limit 2 but got 45 not 175 / 3
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Why Is the Integral Result 175/3 Instead of 45?
In summary, the speaker integrated y using the upper limit of 5 and lower limit of 2 in order to get the result of 45/3, but the correct answer should have been 175/3. This discrepancy may be due to a typo or calculation error by the person who set the question. Additionally, using the notation (1/3)x^3 instead of 1/3x^3 can help avoid confusion.
i integrated y to get (1/3x^3 + 2x) with upper limit 5 / lower limit 2 but got 45 not 175 / 3
- #2
- 27,901
- 19,395
Both Wolfram Alpha and I agree with you.homeworkhelpls said:
- #3
Maarten Havinga
- 76
- 41
Me too!
- #4
Ibix
Science Advisor
- 12,488
- 14,549
The integral would evaluate to 175/3 if the lower limit were x=-2. I suspect a silly typo or calculation slip by the question setter.
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- #5
YouAreAwesome
Gold Member
- 54
- 27
Just a notation tip. 1/3x^3 can be misread as 1/(3x^3) placing the x^3 in the denominator. To be precise, we can instead write (1/3)x^3 to ensure x^3 is in the numerator and not mistakenly placed in the denominator.homeworkhelpls said: