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Given the function 
f(x)=(1-x)/(3x^(3)-4), find 
f^(')(x) in simplified form.
Answer: 
f^(')(x)=

Given the function f(x)=1x3x34 f(x)=\frac{1-x}{3 x^{3}-4} , find f(x) f^{\prime}(x) in simplified form.\newlineAnswer: f(x)= f^{\prime}(x)=

Full solution

Q. Given the function f(x)=1x3x34 f(x)=\frac{1-x}{3 x^{3}-4} , find f(x) f^{\prime}(x) in simplified form.\newlineAnswer: f(x)= f^{\prime}(x)=
  1. Quotient Rule Explanation: To find the derivative of the function f(x)=1x3x34f(x) = \frac{1-x}{3x^3-4}, we will use the quotient rule. The quotient rule states that if we have a function that is the quotient of two functions, u(x)v(x)\frac{u(x)}{v(x)}, then its derivative f(x)f'(x) is given by v(x)u(x)u(x)v(x)(v(x))2\frac{v(x)u'(x) - u(x)v'(x)}{(v(x))^2}. Here, u(x)=1xu(x) = 1-x and v(x)=3x34v(x) = 3x^3-4.
  2. Derivative of u(x)u(x): First, we need to find the derivative of u(x)=1xu(x) = 1-x. The derivative of a constant is 00, and the derivative of x-x with respect to xx is 1-1. Therefore, u(x)=01=1u'(x) = 0 - 1 = -1.
  3. Derivative of v(x)v(x): Next, we need to find the derivative of v(x)=3x34v(x) = 3x^3-4. The derivative of 3x33x^3 with respect to xx is 9x29x^2, and the derivative of a constant is 00. Therefore, v(x)=9x20=9x2v'(x) = 9x^2 - 0 = 9x^2.
  4. Applying Quotient Rule: Now we apply the quotient rule. f(x)=v(x)u(x)u(x)v(x)(v(x))2f'(x) = \frac{v(x)u'(x) - u(x)v'(x)}{(v(x))^2}. Plugging in the derivatives we found, we get f(x)=(3x34)(1)(1x)(9x2)(3x34)2f'(x) = \frac{(3x^3-4)(-1) - (1-x)(9x^2)}{(3x^3-4)^2}.
  5. Simplify Numerator: Simplify the numerator of the derivative. f(x)=3x3+49x2+9x2x(3x34)2f'(x) = \frac{-3x^3 + 4 - 9x^2 + 9x^2x}{(3x^3-4)^2}. Notice that 9x2+9x2x-9x^2 + 9x^2x simplifies to 9x2(1x)-9x^2(1-x).
  6. Further Simplify Numerator: Further simplify the numerator. f(x)=3x3+49x2+9x3(3x34)2f'(x) = \frac{-3x^3 + 4 - 9x^2 + 9x^3}{(3x^3-4)^2}. Combine like terms in the numerator, which are 3x3-3x^3 and 9x39x^3.
  7. Combine Like Terms: After combining like terms, we get f(x)=6x3+49x2(3x34)2f'(x) = \frac{6x^3 + 4 - 9x^2}{(3x^3-4)^2}. This is the simplified form of the derivative.

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