Solve r=p/l - ScanMath

Simplify

r = \frac{p}{l}

Find the first partial derivative by treating the variable l as a constant and differentiating with respect to p

\frac{\partial r}{\partial p} = \frac{\partial}{\partial p} (\frac{p}{l})

Use differentiation rule \frac{\partial}{\partial x} (\frac{f ( x )}{g ( x )}) = \frac{\frac{\partial}{\partial x} ( f ( x )) \times g ( x ) - f ( x ) \times \frac{\partial}{\partial x} ( g ( x ) )}{( g ( x ) ) ^{2}}

\frac{\partial r}{\partial p} = \frac{\frac{\partial}{\partial p} ( p ) l - p \times \frac{\partial}{\partial p} ( l )}{l ^{2}}

Use \frac{\partial}{\partial x} x^{n} = n x^{n - 1} to find derivative

\frac{\partial r}{\partial p} = \frac{1 \times l - p \times \frac{\partial}{\partial p} ( l )}{l ^{2}}

Use \frac{\partial}{\partial x} (c) = 0 to find derivative

\frac{\partial r}{\partial p} = \frac{1 \times l - p \times 0}{l ^{2}}

Any expression multiplied by 1 remains the same

\frac{\partial r}{\partial p} = \frac{l - p \times 0}{l ^{2}}

Any expression multiplied by 0 equals 0

\frac{\partial r}{\partial p} = \frac{l - 0}{l ^{2}}

Removing 0 doesn't change the value,so remove it from the expression

\frac{\partial r}{\partial p} = \frac{l}{l ^{2}}

Solution

More Steps

\frac{\partial r}{\partial p} = \frac{1}{l}

Function