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Integral calculation

  1. Mar 14, 2015 #1
    Hi,

    I believe I have a calculation mistake but I don't know where.
    The correct answer is: 4.75 SCTPDsb.jpg
     
  2. jcsd
  3. Mar 14, 2015 #2

    BiGyElLoWhAt

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    Gold Member

    Sorry, but I can't read that clearly. Try typing up the problem along with your work. Use the \#\# (without the slashes) to begin and end latex code, \frac{numerator}{denominator} for fractions, \int_a^b for ##\int_a^b##.
     
  4. Mar 14, 2015 #3

    Ray Vickson

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    Science Advisor
    Homework Helper

    In LaTeX/TeX you can also use the "\ begin{\ cases } ... \ end{\ cases }" (with no spaces inside the { } pair or after the "\") command to get things like
    [tex] f(x) = \begin{cases} f_1(x) & a \leq x < b\\
    f_2(x) & b \leq x < c
    \end{cases} [/tex]

    To get a "displayed" result (rather than an in-line result), use "[ t e x] .... [/ t e x] " (with no spaces between /, t, e, x). If you use "# # ... # #" (no space) between the two initial and two final #) you will get an in-line result, like this: ##f(x) = a x^2/(b^2+x^2)##. Some things do not look very good in-line, such as ##f(x) = \frac{a x^2}{b^2 + x^2}##, but look just fine in displayed mode:
    [tex] f(x) = \frac{a x^2}{b^2 + x^2} [/tex]
    However, the last issue is basically one of style, not clarity. The results generally look OK if you use ##A/B## in-line instead of ##\frac{A}{B}##.

    Finally, "_" and "^" work properly only for single-symbol subscripts and superscripts. To get multi-symbol scripts, enclose the script in curly brackets, so you will get ##x^{2n}## instead of ##x^2n##.

    You can see the commands for the above by right-clicking on the screen image of an equation or formula and asking for a display as tex commands.
     
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