Using standard series from the List of Formulae (MF26), expand ${{\mathrm{e}}^{2-ax}}$ as far as the

Question

Using standard series from the List of Formulae (MF26), expand ${{\mathrm{e}}^{2-ax}}$ as far as the term in ${{x}^{4}}$, where $a$ is a non-zero constant. [3]

Accepted Answer

$\mathrm{e}^2\left[1 - ax + \displaystyle\frac{a^2}{2}x^2 - \frac{a^3}{6}x^3 + \frac{a^4}{24}x^4 + \cdots\right]$

2022 HCI J2 BT Q1

2022 HCI J2 BT Q1

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