If two resistors with resistances R1 and R2 are connected in parallel, then the total resistance Rt, measured in ohms, is:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\frac{1}{R_t} = \frac{1}{R_1} + \frac{1}{R_2}[/tex]

If R1 and R2 are increasing at rates:

[tex]\frac{d \Omega_1}{dt} = 0.3 \; \; \frac{d \Omega_2}{dt} = 0.2 \; \; R_1 = 80 \; \Omega \; \; R_2 = 100 \; \Omega[/tex]

How fast is Rt changing?

[tex]\frac{d \Omega_t}{dt} = \frac{d}{dt} \left( \frac{1}{R_1} + \frac{1}{R_2} \right)^{-1}[/tex]

Is this the correct initial setup to differentiate this problem?

I am uncertain of the initial differential setup, due to the reciprocals...

This was my initial setup, however does not appear any simpler...

Any suggestions?

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# Reciprocal Differentiation Help!

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