Solve 19y/16y-11

$$\frac { 19 y } { 16 y - 11 }$$

Differentiate w.r.t. y

$$-\frac{209}{\left(16y-11\right)^{2}}$$

Steps Using Derivative Rule for Quotient

For any two differentiable functions, the derivative of the quotient of two functions is the denominator times the derivative of the numerator minus the numerator times the derivative of the denominator, all divided by the denominator squared.

$$\frac{\left(16y^{1}-11\right)\frac{\mathrm{d}}{\mathrm{d}y}(19y^{1})-19y^{1}\frac{\mathrm{d}}{\mathrm{d}y}(16y^{1}-11)}{\left(16y^{1}-11\right)^{2}}$$

The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of ax^{n} is nax^{n-1}.

$$\frac{\left(16y^{1}-11\right)\times 19y^{1-1}-19y^{1}\times 16y^{1-1}}{\left(16y^{1}-11\right)^{2}}$$

Do the arithmetic.

$$\frac{\left(16y^{1}-11\right)\times 19y^{0}-19y^{1}\times 16y^{0}}{\left(16y^{1}-11\right)^{2}}$$

Expand using distributive property.

$$\frac{16y^{1}\times 19y^{0}-11\times 19y^{0}-19y^{1}\times 16y^{0}}{\left(16y^{1}-11\right)^{2}}$$

To multiply powers of the same base, add their exponents.

$$\frac{16\times 19y^{1}-11\times 19y^{0}-19\times 16y^{1}}{\left(16y^{1}-11\right)^{2}}$$

Do the arithmetic.

$$\frac{304y^{1}-209y^{0}-304y^{1}}{\left(16y^{1}-11\right)^{2}}$$

Combine like terms.

$$\frac{\left(304-304\right)y^{1}-209y^{0}}{\left(16y^{1}-11\right)^{2}}$$

Subtract 304 from 304.

$$\frac{-209y^{0}}{\left(16y^{1}-11\right)^{2}}$$

For any term t, t^{1}=t.

$$\frac{-209y^{0}}{\left(16y-11\right)^{2}}$$

For any term t except 0, t^{0}=1.

$$\frac{-209}{\left(16y-11\right)^{2}}$$

Evaluate

$$\frac{19y}{16y-11}$$