u Substitutes for Integration (1 Viewer)

qldbulls

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Do the majority of people use u substitutes all the time to save writing out working? Do you use them on simple questions or only on longer ones? Just wondering.
 

qldbulls

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Do the majority of people use u substitutes all the time to save writing out working? Do you use them on simple questions and all or only on longer ones? Just wondering.
 

qldbulls

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for ext 1 they always give u the substitution so u don't have to worry about when u should be using it
Oh right, fair enough. So ext1 exam markers expect it all the time and in advanced it's personal preference?
 

ExtremelyBoredUser

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i see people doing u sub for something as basic as x/sqrt(1-x^2) or like 1/sqrt(a^2-x^2) which is too much imo. I only use u sub if its a tricky integral to simplify further but like if its a standard i usually ignore it.
 

synthesisFR

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the annoying thing is when they tell u to use substitution when u can just do it in one step using reverse chain rule
(ik they r basically the same thing but if u can just see the answer theres no point taking the long way)
 

carrotsss

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the annoying thing is when they tell u to use substitution when u can just do it in one step using reverse chain rule
(ik they r basically the same thing but if u can just see the answer theres no point taking the long way)
Ikr, like why are they so opposed to basic reverse chain rule
 

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