A) 1
B) 0
C) -2
D) -1
Correct Answer: D
Solution :
\[\Delta A=\left( \frac{dA}{dx} \right)\Delta x=\left( 12x \right)\Delta x\] \[=12x\times \left( \frac{mx}{100} \right)=\frac{12{{x}^{2}}m}{100}\] \[\therefore \] \[=\frac{2m}{100}\times 6{{x}^{2}}\] \[=\pm 4\sqrt{2}\] \[x=\pm \frac{8}{\sqrt{2}}\] = - 1You need to login to perform this action.
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