Correct Answer: Option C

Explanation

x = (2+3t)(5t-4)
Let u = 2+3t ∴du/dt = 3
and v = 5t-4 ∴dv/dt = 5
dx/dt = Vdu/dt + Udv/dt
= (5t-4)3 + (2+3t)5
= 15t - 12 + 10 + 15t
= 30t - 2
= 30x4/5 - 2
= 24 - 2
= 22

There is an explanation video available below.

• what is Esut cut off mark this year? Answer this

  1 Answers   ·   27 minutes ago
• can you write jamb and IJMB exam the same year? Answer this

  2 Answers   ·   Education   ·   3 months ago
• Gifted and talented learners are categorized as follows except? Answer this

  1 Answers   ·   Education   ·   1 week ago