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Evaluate
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Differentiate w.r.t. E
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\frac{E}{\frac{\sqrt{2}}{2}}
Get the value of \sin(\frac{\pi }{4}) from trigonometric values table.
\frac{E\times 2}{\sqrt{2}}
Divide E by \frac{\sqrt{2}}{2} by multiplying E by the reciprocal of \frac{\sqrt{2}}{2}.
\frac{E\times 2\sqrt{2}}{\left(\sqrt{2}\right)^{2}}
Rationalize the denominator of \frac{E\times 2}{\sqrt{2}} by multiplying numerator and denominator by \sqrt{2}.
\frac{E\times 2\sqrt{2}}{2}
The square of \sqrt{2} is 2.
E\sqrt{2}
Cancel out 2 and 2.