Question

A physical quantity P is related to four observables a, b, c and d as follows: X=a3b2 . The percentage errors of measurement in a, b, are 1%, 3%, , respectively. What is the percentage error in the quantity X?
please guys answer me ​

Answer 1

Percentage error in X

$= 3 \frac{ \triangle \: a}{a} \times 100 + 2 \frac{\triangle \: b}{b} \times 100$

now, put the values...

$= 3 \times 1 + 2 \times 3$

$= 3 + 6$

$= 9 percent$