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Input:
convert exp(x) to trig
Write:
`convert exp(x) to trig`
Compute:
$$convert\ to\ trig :$$ $$exp(x)$$
Output:
$$convert\ to\ trig :$$ $$exp(x)== cos(i\ x)+(-i)\ sin(i\ x)$$
Result: $$cos(i\ x)+(-i)\ sin(i\ x)$$
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