PreCalc

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The total electrical resistance R of two resistors connected in parallel with resistances R1 and R2 is given by 1/R=1/R1+1/R2. One resistor has a resistance of 2.3 ohms. Let x be the resistance of the second resistor. Express the total resistance R as a function of x. How do I go about this?

  • PreCalc -

    Type "1/R=1/2.3+1/x solve for x" into WolframAlpha . com and click "Show steps"

  • PreCalc -

    Oops, I meant "1/R=1/2.3+1/x solve for R"

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