Solve for a (complex solution)
\left\{\begin{matrix}a=-\frac{19\left(100^{x}-1\right)}{2x\times 10^{x}}\text{, }&x\neq 0\\a\in \mathrm{C}\text{, }&x=0\end{matrix}\right.
Solve for a
\left\{\begin{matrix}a=-\frac{19\left(100^{x}-1\right)}{2x\times 10^{x}}\text{, }&x\neq 0\\a\in \mathrm{R}\text{, }&x=0\end{matrix}\right.
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2ax=19\times 10^{-x}+19-19\left(10^{x}+1\right)
Use the distributive property to multiply 19 by 10^{-x}+1.
2ax=19\times 10^{-x}+19-19\times 10^{x}-19
Use the distributive property to multiply -19 by 10^{x}+1.
2ax=19\times 10^{-x}-19\times 10^{x}
Subtract 19 from 19 to get 0.
2xa=\frac{19}{10^{x}}-19\times 10^{x}
The equation is in standard form.
\frac{2xa}{2x}=\frac{\frac{19}{10^{x}}-19\times 10^{x}}{2x}
Divide both sides by 2x.
a=\frac{\frac{19}{10^{x}}-19\times 10^{x}}{2x}
Dividing by 2x undoes the multiplication by 2x.
a=\frac{\frac{19}{2\times 10^{x}}-\frac{19\times 10^{x}}{2}}{x}
Divide -19\times 10^{x}+\frac{19}{10^{x}} by 2x.
2ax=19\times 10^{-x}+19-19\left(10^{x}+1\right)
Use the distributive property to multiply 19 by 10^{-x}+1.
2ax=19\times 10^{-x}+19-19\times 10^{x}-19
Use the distributive property to multiply -19 by 10^{x}+1.
2ax=19\times 10^{-x}-19\times 10^{x}
Subtract 19 from 19 to get 0.
2xa=\frac{19}{10^{x}}-19\times 10^{x}
The equation is in standard form.
\frac{2xa}{2x}=\frac{\frac{19}{10^{x}}-19\times 10^{x}}{2x}
Divide both sides by 2x.
a=\frac{\frac{19}{10^{x}}-19\times 10^{x}}{2x}
Dividing by 2x undoes the multiplication by 2x.
a=\frac{\frac{19}{2\times 10^{x}}-\frac{19\times 10^{x}}{2}}{x}
Divide -19\times 10^{x}+\frac{19}{10^{x}} by 2x.
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