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Math Help - intergration

  1. #1
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    intergration

    posted this last night but still need some help.

    antidifferentiation of

    sin^2xcos^2x dx

    does this become

    1/3sinx^3 - 1/2sinx^4 + 1/5sinx^5 + C

    if so can this be simplified??

    secondly

    antidifferentiation of

    sin3xcos4x dx

    is this

    1/2cosx - 1/14cos7x + C

    also if this is true can it be simplified
    Last edited by helmszee; October 22nd 2007 at 07:58 PM. Reason: realised i made a mistake
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by helmszee View Post
    posted this last night but still need some help.

    antidifferentiation of

    sin^2xcos^2x dx

    does this become

    1/3sinx^3 - 1/2sinx^4 + 1/5sinx^5 + C

    if so can this be simplified??

    secondly

    antidifferentiation of

    sin3xcos4x dx

    is this

    1/4sinx - 1/14sinx + C

    also if this is true can this be simplified maybe to 5/28sinx + C
    double posting is against the rules. if you do not understand something, please make it known in the original thread.

    if you differentiate your answers, you do not get the original functions, so your answers are incorrect. try the suggestions made in the original post, evidently you didn't
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  3. #3
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    sorry for breaking the rules, i did try and got the wrong answer, wasnt sure which step i made the mistake in.. once again sorry
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  4. #4
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by helmszee View Post
    sorry for breaking the rules, i did try and got the wrong answer, wasnt sure which step i made the mistake in.. once again sorry
    those were the same answers you gave in the last post and you were told they were wrong. if you tried what was suggested, you would have something different. we cannot tell you what step you messed up on unless you show your steps. type your steps in the original post and we will take it from there
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