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Given the function 
y=(1+x^(4))/(5x-1), find 
(dy)/(dx) in simplified form.
Answer: 
(dy)/(dx)=

Given the function y=1+x45x1 y=\frac{1+x^{4}}{5 x-1} , find dydx \frac{d y}{d x} in simplified form.\newlineAnswer: dydx= \frac{d y}{d x}=

Full solution

Q. Given the function y=1+x45x1 y=\frac{1+x^{4}}{5 x-1} , find dydx \frac{d y}{d x} in simplified form.\newlineAnswer: dydx= \frac{d y}{d x}=
  1. Apply Quotient Rule: To find the derivative of the function y=1+x45x1y=\frac{1+x^{4}}{5x-1} with respect to xx, we will use the quotient rule. The quotient rule states that if you have a function that is the quotient of two functions, u(x)v(x)\frac{u(x)}{v(x)}, then its derivative is given by v(x)u(x)u(x)v(x)(v(x))2\frac{v(x) \cdot u'(x) - u(x) \cdot v'(x)}{(v(x))^{2}}. Here, u(x)=1+x4u(x) = 1 + x^{4} and v(x)=5x1v(x) = 5x - 1.
  2. Find u(x)u(x): First, we need to find the derivative of u(x)=1+x4u(x) = 1 + x^4 with respect to xx. The derivative of a constant is 00, and the derivative of x4x^4 with respect to xx is 4x34x^3. Therefore, u(x)=0+4x3=4x3u'(x) = 0 + 4x^3 = 4x^3.
  3. Find v(x)v(x): Next, we need to find the derivative of v(x)=5x1v(x) = 5x - 1 with respect to xx. The derivative of 5x5x with respect to xx is 55, and the derivative of a constant is 00. Therefore, v(x)=50=5v'(x) = 5 - 0 = 5.
  4. Plug into Quotient Rule: Now we apply the quotient rule. We have u(x)=1+x4u(x) = 1 + x^4, v(x)=5x1v(x) = 5x - 1, u(x)=4x3u'(x) = 4x^3, and v(x)=5v'(x) = 5. Plugging these into the quotient rule formula, we get:\newlinedydx=(5x1)(4x3)(1+x4)(5)(5x1)2\frac{dy}{dx} = \frac{(5x - 1) \cdot (4x^3) - (1 + x^4) \cdot (5)}{(5x - 1)^2}.
  5. Simplify Numerator: We simplify the numerator of the derivative:\newline(5x1)×(4x3)(1+x4)×(5)=20x44x355x4(5x - 1) \times (4x^3) - (1 + x^4) \times (5) = 20x^4 - 4x^3 - 5 - 5x^4.
  6. Combine Like Terms: Combine like terms in the numerator:\newline20x44x355x4=15x44x3520x^4 - 4x^3 - 5 - 5x^4 = 15x^4 - 4x^3 - 5.
  7. Final Derivative: Now we have the simplified form of the derivative:\newline(dydx=15x44x35(5x1)2)(\frac{dy}{dx} = \frac{15x^4 - 4x^3 - 5}{(5x - 1)^2}).

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