# An=n-frac{1}{2}a11=? Given the nth term find the indicated term.

Question
Equations and inequalities
$$\displaystyle{A}{n}={n}-{\frac{{{1}}}{{{2}}}}{a}{11}=?$$ Given the nth term find the indicated term.

2021-03-08
We just need to substitute in the value of nn and simplify.
$$\displaystyle{A}{n}={n}−{\frac{{{1}}}{{{2}}}}$$
$$\displaystyle∴{A}{11}={\left({11}\right)}−{\frac{{{1}}}{{{2}}}}$$
$$\displaystyle∴{A}{11}=\frac{{21}}{}$$

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