A) \[\frac{\Delta {{A}^{3}}}{A}\]
B) \[{{\left( \frac{\Delta {{A}^{{}}}}{A} \right)}^{3}}\]
C) \[3\left( \frac{\Delta {{A}^{{}}}}{A} \right)\]
D) \[{{\left( \frac{\Delta {{A}^{{}}}}{A} \right)}^{1/3}}\]
Correct Answer: C
Solution :
[c] as \[z={{A}^{3}}\], so \[\frac{\Delta z}{z}=3\frac{\Delta A}{A}\]
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