UPSC NDA II 2025 Mathematics Paper

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Question Numbers: 85-86
For the following two (02) items:
Let u=∫excos‌ ‌x‌ ‌dx and v=∫exsin‌ ‌x‌ ‌dx.
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Question : 86 of 120
 
Marks: +1, -0
Consider the following:
I. ‌
du
dx
=−v

II. ‌
dv
dx
=−u

Which of the above is/are correct?
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