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Given the function 
f(x)=sqrtx-2sqrt(x^(3)), find 
f^(')(3). Express your answer as a single fraction in simplest radical form.
Answer: 
f^(')(3)=

Given the function f(x)=x2x3 f(x)=\sqrt{x}-2 \sqrt{x^{3}} , find f(3) f^{\prime}(3) . Express your answer as a single fraction in simplest radical form.\newlineAnswer: f(3)= f^{\prime}(3)=

Full solution

Q. Given the function f(x)=x2x3 f(x)=\sqrt{x}-2 \sqrt{x^{3}} , find f(3) f^{\prime}(3) . Express your answer as a single fraction in simplest radical form.\newlineAnswer: f(3)= f^{\prime}(3)=
  1. Apply Differentiation Rules: To find the derivative of the function f(x)=x2x3f(x) = \sqrt{x} - 2\sqrt{x^3}, we need to apply the rules of differentiation to each term separately.\newlineThe derivative of x\sqrt{x} with respect to xx is (1/2)x(1/2)(1/2)x^{(-1/2)}.\newlineThe derivative of x3\sqrt{x^3} with respect to xx is (3/2)x(3/21)=(3/2)x(1/2)(3/2)x^{(3/2 - 1)} = (3/2)x^{(1/2)}.\newlineTherefore, the derivative of f(x)f(x) is f(x)=(1/2)x(1/2)2×(3/2)x(1/2)f'(x) = (1/2)x^{(-1/2)} - 2 \times (3/2)x^{(1/2)}.
  2. Derivative of x\sqrt{x}: Now we simplify the expression for f(x)f'(x).f(x)=(12)x(12)3x(12)f'(x) = (\frac{1}{2})x^{(-\frac{1}{2})} - 3x^{(\frac{1}{2})}.
  3. Derivative of x3\sqrt{x^3}: Next, we evaluate the derivative at x=3x = 3.f(3)=(12)3123(312)f'(3) = (\frac{1}{2})3^{-\frac{1}{2}} - 3(3^{\frac{1}{2}}).
  4. Simplify f(x)f'(x): We calculate the values of 3(1/2)3^{(-1/2)} and 3(1/2)3^{(1/2)}.\newline3(1/2)3^{(-1/2)} is the reciprocal of the square root of 33, which is 1/31/\sqrt{3}.\newline3(1/2)3^{(1/2)} is the square root of 33, which is 3\sqrt{3}.\newlineSo, f(3)=(1/2)(1/3)3(3)f'(3) = (1/2)(1/\sqrt{3}) - 3(\sqrt{3}).
  5. Evaluate at x=3x = 3: We simplify the expression by finding a common denominator and combining the terms.f(3)=(12)(13)3(3)f'(3) = \left(\frac{1}{2}\right)\left(\frac{1}{\sqrt{3}}\right) - 3(\sqrt{3}) can be written as 16323\frac{1 - 6\sqrt{3}}{2\sqrt{3}}.
  6. Calculate 3(1/2)3^{(-1/2)} and 3(1/2)3^{(1/2)}: To rationalize the denominator, we multiply the numerator and the denominator by 3\sqrt{3}. f(3)=(16323)(33)f'(3) = \left(\frac{1 - 6\sqrt{3}}{2\sqrt{3}}\right) * \left(\frac{\sqrt{3}}{\sqrt{3}}\right).
  7. Combine Terms: We perform the multiplication to rationalize the denominator.\newlinef(3)=(36×3)/(2×3)f'(3) = (\sqrt{3} - 6\times 3)/(2\times 3).
  8. Rationalize Denominator: We simplify the expression further. f(3)=3186f'(3) = \frac{\sqrt{3} - 18}{6}.
  9. Perform Multiplication: Finally, we check if the expression is in its simplest form. Since there are no common factors to cancel out, the expression (318)/6(\sqrt{3} - 18)/6 is in its simplest form.

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