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Given the function 
f(x)=(6x^(2)-3)(5-2x^(2)+7x^(-1)), find 
f^(')(x) in any form.
Answer: 
f^(')(x)=

Given the function f(x)=(6x23)(52x2+7x1) f(x)=\left(6 x^{2}-3\right)\left(5-2 x^{2}+7 x^{-1}\right) , find f(x) f^{\prime}(x) in any form.\newlineAnswer: f(x)= f^{\prime}(x)=

Full solution

Q. Given the function f(x)=(6x23)(52x2+7x1) f(x)=\left(6 x^{2}-3\right)\left(5-2 x^{2}+7 x^{-1}\right) , find f(x) f^{\prime}(x) in any form.\newlineAnswer: f(x)= f^{\prime}(x)=
  1. Apply Product Rule: To find the derivative of the function f(x)=(6x23)(52x2+7x1)f(x)=(6x^{2}-3)(5-2x^{2}+7x^{-1}), we will use the product rule. The product rule states that the derivative of a product of two functions is the derivative of the first function times the second function plus the first function times the derivative of the second function.
  2. Define Functions: Let's denote the first function as u(x)=6x23u(x) = 6x^2 - 3 and the second function as v(x)=52x2+7x1v(x) = 5 - 2x^2 + 7x^{-1}. We will find the derivatives u(x)u'(x) and v(x)v'(x) separately.
  3. Find u(x)u'(x): The derivative of u(x)=6x23u(x) = 6x^2 - 3 with respect to xx is u(x)=ddx(6x2)ddx(3)=12x0=12xu'(x) = \frac{d}{dx}(6x^2) - \frac{d}{dx}(3) = 12x - 0 = 12x.
  4. Find v(x)v'(x): The derivative of v(x)=52x2+7x1v(x) = 5 - 2x^2 + 7x^{-1} with respect to xx is v(x)=ddx(5)ddx(2x2)+ddx(7x1)=04x+(7)x2=4x7x2v'(x) = \frac{d}{dx}(5) - \frac{d}{dx}(2x^2) + \frac{d}{dx}(7x^{-1}) = 0 - 4x + (-7)x^{-2} = -4x - 7x^{-2}.
  5. Apply Product Rule Again: Now we apply the product rule: f(x)=u(x)v(x)+u(x)v(x)f'(x) = u'(x)v(x) + u(x)v'(x). Substituting the derivatives we found, we get f(x)=(12x)(52x2+7x1)+(6x23)(4x7x2)f'(x) = (12x)(5 - 2x^2 + 7x^{-1}) + (6x^2 - 3)(-4x - 7x^{-2}).
  6. Distribute Terms: We will now distribute the terms in the expression for f(x)f'(x): f(x)=12x(5)12x(2x2)+12x(7x1)(6x2)(4x)(6x2)(7x2)3(4x)3(7x2)f'(x) = 12x(5) - 12x(2x^2) + 12x(7x^{-1}) - (6x^2)(4x) - (6x^2)(7x^{-2}) - 3(-4x) - 3(-7x^{-2}).
  7. Simplify Expression: Simplify the expression by performing the multiplications: f(x)=60x24x3+84x024x342x012x+21x2f'(x) = 60x - 24x^3 + 84x^0 - 24x^3 - 42x^0 - 12x + 21x^{-2}.
  8. Combine Like Terms: Combine like terms in the expression for f(x)f'(x): f(x)=(60x12x)(24x3+24x3)+(8442)+21x2f'(x) = (60x - 12x) - (24x^3 + 24x^3) + (84 - 42) + 21x^{-2}.
  9. Final Answer: After combining like terms, we get f(x)=48x48x3+42+21x2f'(x) = 48x - 48x^3 + 42 + 21x^{-2}.
  10. Final Answer: After combining like terms, we get f(x)=48x48x3+42+21x2f'(x) = 48x - 48x^3 + 42 + 21x^{-2}.We have found the derivative of the function f(x)f(x) in its simplified form. The final answer is f(x)=48x48x3+42+21x2f'(x) = 48x - 48x^3 + 42 + 21x^{-2}.

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