Problems of summation symbols and arrows in latex

Time:2021-9-3

Summation symbol

Sum in latex (\ sum {}) For symbols\sum_{ Sum lower limit} ^ {sum upper limit}Write it out, as shown in the figure below:

\displaystyle
\sum_{i=1}^{N}

Problems of summation symbols and arrows in latex

Note: don’t forget to write\displaystyleOtherwise, the following effect will appear:

\sum_{i=1}^{N}

Problems of summation symbols and arrows in latex

arrow

Arrow in latex \ rightarrow\rightarrowWrite it out, as shown in the figure below:

\rightarrow

Problems of summation symbols and arrows in latex

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