Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Let 
f(x)=x^((1)/(2)).

f^(')(4)=

Let f(x)=x12 f(x)=x^{\frac{1}{2}} .\newlinef(4)= f^{\prime}(4)=

Full solution

Q. Let f(x)=x12 f(x)=x^{\frac{1}{2}} .\newlinef(4)= f^{\prime}(4)=
  1. Identify Function and Point: Identify the function and the point at which the derivative is to be evaluated.\newlineWe are given the function f(x)=x12f(x) = x^{\frac{1}{2}} and we need to find its derivative at the point x=4x = 4.
  2. Differentiate with Power Rule: Differentiate the function with respect to xx. To find f(x)f'(x), we use the power rule for differentiation, which states that if f(x)=xnf(x) = x^n, then f(x)=nx(n1)f'(x) = n\cdot x^{(n-1)}. Differentiating f(x)=x(1/2)f(x) = x^{(1/2)}, we get f(x)=(1/2)x((1/2)1)=(1/2)x(1/2)f'(x) = (1/2)\cdot x^{((1/2)-1)} = (1/2)\cdot x^{(-1/2)}.
  3. Simplify Derivative Expression: Simplify the expression for the derivative.\newlineSimplifying f(x)=(12)x(12)f'(x) = (\frac{1}{2})*x^{(-\frac{1}{2})}, we can write it as f(x)=(12)(1x(12))f'(x) = (\frac{1}{2})*(\frac{1}{x^{(\frac{1}{2})}}) or f(x)=12xf'(x) = \frac{1}{2*\sqrt{x}}.
  4. Evaluate at x=4x = 4: Evaluate the derivative at x=4x = 4.\newlineSubstitute x=4x = 4 into the derivative f(x)=12xf'(x) = \frac{1}{2\sqrt{x}} to find f(4)f'(4).\newlinef(4)=124=122=14f'(4) = \frac{1}{2\sqrt{4}} = \frac{1}{2\cdot 2} = \frac{1}{4}.

More problems from Multiplication with rational exponents