Solve frac{2x^{2}y^2}{4x^2+7^4*3x^-3}

$$\frac { 2 x ^ { 2 } y ^ { 2 } } { 4 x ^ { 2 } + 7 ^ { 4 } \cdot 3 x ^ { - 3 } }$$

Evaluate

$$\frac{2y^{2}x^{5}}{4x^{5}+7203}$$

Short Solution Steps

Calculate 7 to the power of 4 and get 2401.

$$\frac{2x^{2}y^{2}}{4x^{2}+2401\times 3x^{-3}}$$

Multiply 2401 and 3 to get 7203.

$$\frac{2x^{2}y^{2}}{4x^{2}+7203x^{-3}}$$

Factor the expressions that are not already factored.

$$\frac{2x^{2}y^{2}}{x^{-3}\left(4x^{5}+7203\right)}$$

To divide powers of the same base, subtract the denominator's exponent from the numerator's exponent.

$$\frac{2y^{2}x^{5}}{4x^{5}+7203}$$

Differentiate w.r.t. x

$$72030\times \left(\frac{y}{4x^{5}+7203}\right)^{2}x^{4}$$

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.

$$\frac{\left(4x^{2}+7203x^{-3}\right)\frac{\mathrm{d}}{\mathrm{d}x}(2y^{2}x^{2})-2y^{2}x^{2}\frac{\mathrm{d}}{\mathrm{d}x}(4x^{2}+7203x^{-3})}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$

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}.

$$\frac{\left(4x^{2}+7203x^{-3}\right)\times 2\times 2y^{2}x^{2-1}-2y^{2}x^{2}\left(2\times 4x^{2-1}-3\times 7203x^{-3-1}\right)}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$

Simplify.

$$\frac{\left(4x^{2}+7203x^{-3}\right)\times 4y^{2}x^{1}-2y^{2}x^{2}\left(8x^{1}-21609x^{-4}\right)}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$

Multiply 4x^{2}+7203x^{-3} times 4y^{2}x^{1}.

$$\frac{4x^{2}\times 4y^{2}x^{1}+7203x^{-3}\times 4y^{2}x^{1}-2y^{2}x^{2}\left(8x^{1}-21609x^{-4}\right)}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$

Multiply 2y^{2}x^{2} times 8x^{1}-21609x^{-4}.

$$\frac{4x^{2}\times 4y^{2}x^{1}+7203x^{-3}\times 4y^{2}x^{1}-\left(2y^{2}x^{2}\times 8x^{1}+2y^{2}x^{2}\left(-21609\right)x^{-4}\right)}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$

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

$$\frac{4\times 4y^{2}x^{2+1}+7203\times 4y^{2}x^{-3+1}-\left(2y^{2}\times 8x^{2+1}+2y^{2}\left(-21609\right)x^{2-4}\right)}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$

Simplify.

$$\frac{16y^{2}x^{3}+28812y^{2}x^{-2}-\left(16y^{2}x^{3}+\left(-43218y^{2}\right)x^{-2}\right)}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$

Combine like terms.

$$\frac{72030y^{2}x^{-2}}{\left(4x^{2}+7203x^{-3}\right)^{2}}$$