Question

Help!! Full steps required!!

Question 10th

Urgent!!

Answer 1

Hey there

Thank you for asking Such a Tricky + Interesting question

The main concept which we use over here is to Differentiate this isn't it ?

and we know differentiation is nothing but to split the number and is mainly used for the slope related question

• Given that

A = 3t²+ 7

Here we can find out the value of A easily if we differentiate it ,

On doing differentiation we obtain

$area \: = \frac{d (3 {t}^{2} + 7)}{dt} = 3 \times 2 {t}^{2 - 1} + 0 = 6t$

we are given that t = 5
second

Now putting t = 5


A = 6 × 5

A = 30 cm²


Hence the area is 30cm²

Hope this helps you ☺

Answer 2

Hi,

Here is your answer,

 S = ut + 1/2 at²

 Differentiate with respect to ''x''

→ d/dt(s) = d/dt (ut+1/2at²)

→ds/dt = u × d/dt(t) + 1/2a × d/dt (t²)  { On cancelling dt and t }

→ u × (1) + 1/2 × a × (2t)    { On cancelling 2 } 

           → ds/dt = u + at                 { FINAL ANSWER }


Hope it helps you !