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Math Help - format

  1. #1
    Senior Member polymerase's Avatar
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    format

    Lets say i have a question, for example, \int_0^5 (x^2-9)^2\;dx

    Now if i wanted to show my entire work for this question, i would start off like this:

    \int_0^5 (x^2-9)^2\;dx=\int_0^5 x^4-18x^2+81\;dx

    Now lets assume i want to show every single step afterwards...how do i use latex such that all my further work will start with an equal sign but IN LINE my first equal sign so such that i WOULDNT need to repeat the original question everytime (for it to align)

    I hope this is understandable :P

    Thanks

    PS. I know this shouldn't be here...but lets face it...placing it in the right sections get little/no attention.
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  2. #2
    MHF Contributor Mathstud28's Avatar
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    Quote Originally Posted by polymerase View Post
    Lets say i have a question, for example, \int_0^5 (x^2-9)^2\;dx

    Now if i wanted to show my entire work for this question, i would start off like this:

    \int_0^5 (x^2-9)^2\;dx=\int_0^5 \x^4-18x^2+81;dx

    Now lets assume i want to show every single step afterwards...how do i use latex such that all my further work will start with an equal sign but IN LINE my first equal sign so such that i WOULDNT need to repeat the original question everytime (for it to align)

    I hope this is understandable :P

    Thanks

    PS. I know this shouldn't be here...but lets face it...placing it in the right sections get little/no attention.
    \begin{aligned}\int_{-1}^{1}(x^2+9)^2dx&=2\int_0^1(x^2+9)^2dx\\<br />
&=2\int_0^1\left\{x^4-18x^2+81\right\}dx\\<br />
&=\frac{872}{5}\end{aligned}


    [tex]\begin{aligned}\int_{-1}^{1}(x^2+9)^2dx&=2\int_0^1(x^2+9)^2dx\\
    &=2\int_0^1\left\{x^4-18x^2+81\right\}dx\\
    &=\frac{872}{5}\end{aligned}[/tex]
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    New York, USA
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    Quote Originally Posted by polymerase View Post
    Lets say i have a question, for example, \int_0^5 (x^2-9)^2\;dx

    Now if i wanted to show my entire work for this question, i would start off like this:

    \int_0^5 (x^2-9)^2\;dx=\int_0^5 x^4-18x^2+81\;dx

    Now lets assume i want to show every single step afterwards...how do i use latex such that all my further work will start with an equal sign but IN LINE my first equal sign so such that i WOULDNT need to repeat the original question everytime (for it to align)

    I hope this is understandable :P

    Thanks

    PS. I know this shouldn't be here...but lets face it...placing it in the right sections get little/no attention.
    see posts #78 and #79 here. they show two ways of doing it. mathstud gave one
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