if two resistors with resistances R1 and R2 are connected parallel, then the total Resistance R measured ohms, is given by 1/r=1/r1+1/r2. If r1 and r2 are increasing at rates of 0.1 ohms/sec and 0.4 ohms/sec respectively, how fast is R changing when r1= 75 and r2=100? round to nearest thousandth

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.