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Two resistors $\"\"$ and $\"\"$ are connected in parallel.

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The total resistance $\"\"$ is measured by the equation $\"\"$ .

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Rate of increase in resistor $\"\"$ is $\"\"$ .

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Rate of increase in resistor $\"\"$ is $\"\"$ .

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Find the rate of change of $\"\"$ , when $\"\"$ and $\"\"$ .

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Substitute $\"\"$ values in $\"\"$ to get $\"\"$ .

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$\"\"$

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Consider $\"\"$ .

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$\"\"$ .

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Differentiate on each side with respect to $\"\"$ .

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$\"\"$

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Substitute all the corresponding in the above equation.

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$\"\"$

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Find the rate of change of $\"\"$ when $\"\"$ and $\"\"$ is $\"\"$ .

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Find the rate of change of $\"\"$ is $\"\"$ .