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    The question is from the Heinemann Edexcel C4 book, 6G, Question 3.e.:

    Integrate x^22sec^2xtanx dx

    I've figured out u = x^2, and du/dx = 2x

    And dv/dx = 2sec^2xtanx, but I can't figure out how to get v? Any help would be appreciated !!
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    (Original post by oceanicccc)
    The question is from the Heinemann Edexcel C4 book, 6G, Question 3.e.:

    Integrate x^22sec^2xtanx dx

    I've figured out u = x^2, and du/dx = 2x

    And dv/dx = 2sec^2xtanx, but I can't figure out how to get v? Any help would be appreciated !!
    Try differentiating \sec^2x

    By the way, you need to take more care when typing up questions. I thought your question read x^{22}
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    if you want to type powers then...

    sec2x can be written sec{sup}2{/sup}x but replace each { with a [
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    (Original post by the bear)
    if you want to type powers then...

    sec2x can be written sec{sup}2{/sup}x but replace each { with a [
    I'd prefer them to use LaTex really.
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    (Original post by Mr M)
    I'd prefer them to use LaTex really.
    the sup and sub is less stressful than latex
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    (Original post by the bear)
    the sup and sub is less stressful than latex
    “I have little patience with scientists who take a board of wood, look for its thinnest part, and drill a great number of holes where drilling is easy.” Albert Einstein
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    (Original post by Mr M)
    “I have little patience with scientists who take a board of wood, look for its thinnest part, and drill a great number of holes where drilling is easy.” Albert Einstein
    Latex Schmatex... sorry Albert
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    (Original post by the bear)
    Latex Schmatex... sorry Albert
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    (Original post by Mr M)
    heya Alberto it's notta so bad SHUT UPPA YOUR FACE

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    (Original post by Mr M)
    “I have little patience with scientists who take a board of wood, look for its thinnest part, and drill a great number of holes where drilling is easy.” Albert Einstein
    You're helping a student with an A-Level maths question on an internet forum. Your argument is like suggesting text speak is foolish because authors use full sentences and correct grammar.
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    (Original post by PythianLegume)
    You're helping a student with an A-Level maths question on an internet forum. Your argument is like suggesting text speak is foolish because authors use full sentences and correct grammar.
    You don't have to be a published author to write properly. Text speak is prohibited on TSR because it is an academic website.

    Browsing the TSR LaTex Wiki for about 5 minutes will allow the OP to avoid ambiguity and confusion in the future and make it easier for people to help him.
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    10 replies, only 1 tries to help OP. Welcome to TSR.
    P.S. It's 11/1 now.
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    (Original post by oceanicccc)
    The question is from the Heinemann Edexcel C4 book, 6G, Question 3.e.:

    Integrate x^22sec^2xtanx dx

    I've figured out u = x^2, and du/dx = 2x

    And dv/dx = 2sec^2xtanx, but I can't figure out how to get v? Any help would be appreciated !!
    Is your question, how to integrate, \displaystyle 2\int x^2\sec^2x \tan x\,dx ?
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    (Original post by bogstandardname)
    Is your question, how to integrate, \displaystyle 2\int x^2\sec^2x \tan x\,dx ?
    Yes and it was answered in post 2.
 
 
 
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