PG entrance exam CUET PG 2025 Mock Test Engineering Mathematics Calculus Vector Calculus

यदि सदिश \(\rm \vec A=(2xy-3yz)\hat i+(x^2+axz-4z^2)\hat j-(3xy+byz)\hat k\) का कुंतल (curl) शून्य है, तो a + b बराबर है:

1
8
2
-3
3
5
4
11
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