Teaching DSSSB TGT Mock Test 2025 Mathematics Differential Equations

यदि y = \(\rm\left(\frac{1}{x}\right)^x \), तो \(\rm e^e\left(\frac{d^2 y}{d x^2}\right)_{x=e}\) का मान:

1
2 − \(\rm\frac{1}{e}\)
2
4 − \(\rm\frac{1}{e}\)
3
\(\rm\frac{1}{e}\)
4
1 − \(\rm\frac{1}{e}\)
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