C4 2005 June Q4

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A model solution of question 4 from the June 2004 EdExcel C4 Core Mathematics paper. This question involves the use of integration by substitution.
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I did this correctly just as you did but the mark scheme confused me.

It said (1 - x^2)^0.5 -> (1 - (sin^2x))^1.5.

Is that an error in the markscheme?

EdgefPain
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