Question

please give step by step explanation​

Answer 1

Answer:

If y=tan−1(11+x+x2)+tan−1(1x2+3x+3)+tan−1(1x2+5x+7), then y'(0)= (i)−310 (ii)−510 (iii)−710 (iv)−910

Step-by-step explanation:

Answer 2

Answer: $478.75*10^{-9}$

Step-by-step explanation:

$4.82*10^{-7}-3.25*10^{-9}$

=$4.82*\frac{100}{100} *10^{-7} -3.25*10^{-9}$

=$482*10^{-9} -3.25*10^{-9}$

=$(482-3.25)*10^{-9}$

=$478.75*10^{-9}$

Hope it helps.