Teaching DSSSB TGT Mock Test 2025 Engineering Mathematics Calculus Vector Calculus

If the directional derivative of the function z = y2e2x at (2, -1) along the unit vector \(\vec b = \alpha \hat i + \beta \hat j\) is zero, then |α + β| equals

1
\(\frac{1}{{2\sqrt 2 }}\)
2
\(\frac{1}{{\sqrt 2 }}\)
3
√2
4
2√2
Share: WhatsApp Telegram X

Sponsored

hivanix.in

Visit

This quiz is brought to you by hivanix.in

🌐 Web App Development

Other Tools: chatwiz.hivanix.in mmspace.hivanix.in unogame.hivanix.in

Quick Navigation

Home

Subjects

Chapters