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IGCSE/GCSE/O & A Level/IB/University Student Forum
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integration
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Topic: integration (Read 963 times)
Light
SF Immigrant
Posts: 51
Reputation: 355
integration
«
on:
February 06, 2010, 02:01:33 pm »
how to integrate by recognition: (7x^2)(x^3 +1)^5 dx ?
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astarmathsandphysics
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Free the exam papers!
Re: integration
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Reply #1 on:
February 06, 2010, 02:22:47 pm »
Multiply the bracket out then integrate term by term using
«
Last Edit: February 06, 2010, 02:24:30 pm by astarmathsandphysics
»
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Light
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Posts: 51
Reputation: 355
Re: integration
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Reply #2 on:
February 06, 2010, 02:30:02 pm »
but the answer is in form of factorised with power.is there any shorter way?power 5 need long way of expanding.==
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astarmathsandphysics
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Re: integration
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Reply #3 on:
February 06, 2010, 02:34:49 pm »
I didn't see the power cos I was blinded by q80's link. Better then integration by substition
u=x^3+1
so
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Last Edit: February 06, 2010, 03:01:37 pm by astarmathsandphysics
»
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Light
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Posts: 51
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Re: integration
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Reply #4 on:
February 06, 2010, 02:35:48 pm »
but question says integration by recognition.
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astarmathsandphysics
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Re: integration
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Reply #5 on:
February 06, 2010, 03:02:33 pm »
I am surprised. Manipulation involved. See my answer above
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IGCSE/GCSE/O & A Level/IB/University Student Forum
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Qualification
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GCE AS & A2 Level
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Subject Doubts
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Math
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integration