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Definite Integral (Posted on 2002-08-06) Difficulty: 3 of 5
Let f(x) = √(1-x²)

Find the definite integral of f(x) between x = 0 and x = 1

See The Solution Submitted by Cheradenine    
Rating: 3.0000 (8 votes)

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re(5): Easy solution | Comment 6 of 15 |
(In reply to re(4): Easy solution by levik)

This is a typical misconception.. The square root of a number is always a positive number. This must not be confused with the following valid reasoning

x² = 1 implies that x = ±√1

but √1 = 1. (ie √ is a function as TomM said)
  Posted by Cheradenine on 2002-08-08 07:15:08

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