Easy -1.8 This is a direct recall question requiring only knowledge of the definition sinh x = (e^x - e^(-x))/2, making 2sinh x = e^x - e^(-x). It's a multiple-choice question with no calculation or problem-solving required, making it significantly easier than average A-level questions.
1 Which of the following exponential expressions is equivalent to \(2 \sinh x\) ?
Circle your answer.
\(\mathrm { e } ^ { x }\)
\(\mathrm { e } ^ { x } + \mathrm { e } ^ { - x }\)
\(\mathrm { e } ^ { x } - \mathrm { e } ^ { - x }\)
\(\mathrm { e } ^ { - x }\)
1 Which of the following exponential expressions is equivalent to $2 \sinh x$ ?\\
Circle your answer.\\
$\mathrm { e } ^ { x }$\\
$\mathrm { e } ^ { x } + \mathrm { e } ^ { - x }$\\
$\mathrm { e } ^ { x } - \mathrm { e } ^ { - x }$\\
$\mathrm { e } ^ { - x }$
\hfill \mbox{\textit{AQA Further AS Paper 1 2022 Q1 [1]}}