যদি এবং হয়, তাহলে

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Question

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DSSSB TGT Maths Male Subject Concerned- 23 Sep 2018 Shift 1

Answer 1

গণনা:

প্রদত্ত: এবং

⇒ log x = z বসিয়ে পাই

যাতে x = e^z

যাতে dx = e^z dz

যখন x = e, z = loge

x = e², z = log e² = 2 log e = z

অর্থাৎ I₁ = (e^z dz) / z =(e^x/z) dx = I₂

অর্থাৎ I₁ = I₂

⇒ I1 - I2 = 0