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Let 
y=sqrt(e^(x)).
Find 
(dy)/(dx).
Choose 1 answer:
(A) 
xsqrt(e^(x-1))
(B) 
(1)/(2sqrt(e^(x)))
(C) 
sqrt(e^(x))
(D) 
(sqrt(e^(x)))/(2)

Let y=ex y=\sqrt{e^{x}} .\newlineFind dydx \frac{d y}{d x} .\newlineChoose 11 answer:\newline(A) xex1 x \sqrt{e^{x-1}} \newline(B) 12ex \frac{1}{2 \sqrt{e^{x}}} \newline(C) ex \sqrt{e^{x}} \newline(D) ex2 \frac{\sqrt{e^{x}}}{2}

Full solution

Q. Let y=ex y=\sqrt{e^{x}} .\newlineFind dydx \frac{d y}{d x} .\newlineChoose 11 answer:\newline(A) xex1 x \sqrt{e^{x-1}} \newline(B) 12ex \frac{1}{2 \sqrt{e^{x}}} \newline(C) ex \sqrt{e^{x}} \newline(D) ex2 \frac{\sqrt{e^{x}}}{2}
  1. Write Function, Variable: Write down the function and identify the differentiation variable.\newlineWe have the function y=exy = \sqrt{e^{x}}. We want to find the derivative of yy with respect to xx, which is denoted as dydx\frac{dy}{dx}.
  2. Apply Chain Rule: Apply the chain rule for differentiation.\newlineThe chain rule states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function times the derivative of the inner function. In this case, the outer function is the square root function, and the inner function is exe^x.
  3. Differentiate Outer Function: Differentiate the outer function with respect to the inner function.\newlineThe derivative of u\sqrt{u} with respect to uu is 12u\frac{1}{2\sqrt{u}}, where uu is the inner function. In this case, u=exu = e^x, so the derivative of the outer function is 12ex\frac{1}{2\sqrt{e^x}}.
  4. Differentiate Inner Function: Differentiate the inner function with respect to xx. The derivative of exe^x with respect to xx is exe^x. So, the derivative of the inner function is exe^x.
  5. Multiply Derivatives: Multiply the derivatives of the outer and inner functions.\newlineUsing the chain rule from Step 22, we multiply the derivative of the outer function from Step 33 by the derivative of the inner function from Step 44. This gives us dydx=12ex×ex\frac{dy}{dx} = \frac{1}{2\sqrt{e^x}} \times e^x.
  6. Simplify Expression: Simplify the expression.\newlineWe can simplify the expression by canceling out one exe^x in the numerator with the exe^x in the denominator of the square root. This leaves us with dydx=ex2ex\frac{dy}{dx} = \frac{e^x}{2\sqrt{e^x}}.
  7. Recognize Simplification: Recognize that ex/exe^x/\sqrt{e^x} is the same as ex\sqrt{e^x}. Since exe^x is the same as (ex)2(\sqrt{e^x})^2, we can simplify the expression further to get (dy)/(dx)=(ex)/(2)(dy)/(dx) = (\sqrt{e^x})/(2).

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