The position | Continuity Differentiability| JEE-MAIN-2020

JEE MAIN 2020

06-09-2020_S1

Question

The position of a moving car at time $t$ is given by $f(t)=a t^2+b t+c, t>0$, where $a, b$ and $c$ are real numbers greater than 1 . Then the average speed of the car over the time interval $\left[t_1, t_2\right]$ is attained at the point :

Select the correct option:

$2 a\left(t_1+t_2\right)+b$

$\left(t_2-t_1\right) / 2$

$a\left(t_2-t_1\right)+b$

$\left(t_1+t_2\right) / 2$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Mathematics

Easy

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