GATE EE 2023 Set 1 — Question 34
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Engineering Mathematics → Differential Equations → First-Order Equations
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Question
In the following differential equation, the numerically obtained value of , at , is _______________ (Round off to 2 decimal places).
Correct answer
0.48 to 0.52
Solution
To find , we integrate the given differential equation from to :Since , .Because is very small, we can approximate the integrand. For , and .
Thus, the integrand is approximately:Integrating this approximation:Rounding to two decimal places, we get . The official allowed range is to .
Thus, the integrand is approximately:Integrating this approximation:Rounding to two decimal places, we get . The official allowed range is to .
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