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(d)/(dx)[sqrt(8x^(2)+2x-3)]=?
Choose 1 answer:
(A) 
(8x+1)/(sqrt(8x^(2)+2x-3))
(B) 
(8x+1)/(sqrtx)
(c) 
sqrt(16 x+2)
(D) 
(1)/(2sqrt(16 x+2))

ddx[8x2+2x3]=? \frac{d}{d x}\left[\sqrt{8 x^{2}+2 x-3}\right]=? \newlineChoose 11 answer:\newline(A) 8x+18x2+2x3 \frac{8 x+1}{\sqrt{8 x^{2}+2 x-3}} \newline(B) 8x+1x \frac{8 x+1}{\sqrt{x}} \newline(c) 16x+2 \sqrt{16 x+2} \newline(D) 1216x+2 \frac{1}{2 \sqrt{16 x+2}}

Full solution

Q. ddx[8x2+2x3]=? \frac{d}{d x}\left[\sqrt{8 x^{2}+2 x-3}\right]=? \newlineChoose 11 answer:\newline(A) 8x+18x2+2x3 \frac{8 x+1}{\sqrt{8 x^{2}+2 x-3}} \newline(B) 8x+1x \frac{8 x+1}{\sqrt{x}} \newline(c) 16x+2 \sqrt{16 x+2} \newline(D) 1216x+2 \frac{1}{2 \sqrt{16 x+2}}
  1. Identify function: Identify the function to differentiate.\newlineWe are given the function f(x)=8x2+2x3f(x) = \sqrt{8x^2 + 2x - 3}. We need to find its derivative with respect to xx, which is denoted as ddx[f(x)]\frac{d}{dx}[f(x)].
  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 the quadratic polynomial 8x2+2x38x^2 + 2x - 3.
  3. Differentiate outer function: Differentiate the outer function.\newlineThe derivative of u\sqrt{u} with respect to uu is 12u\frac{1}{2\sqrt{u}}. So, the derivative of the outer function with respect to the inner function is 128x2+2x3\frac{1}{2\sqrt{8x^2 + 2x - 3}}.
  4. Differentiate inner function: Differentiate the inner function.\newlineThe derivative of 8x2+2x38x^2 + 2x - 3 with respect to xx is 16x+216x + 2.
  5. Apply chain rule multiplication: Apply the chain rule by multiplying the derivatives of the outer and inner functions.\newlineThe derivative of the function f(x)f(x) with respect to xx is 128x2+2x3\frac{1}{2\sqrt{8x^2 + 2x - 3}}\cdot(16x+216x + 2).
  6. Simplify expression: Simplify the expression.\newlineWe can simplify the expression by multiplying the numerator of the first fraction by the second fraction. This gives us (16x+2)/(28x2+2x3)(16x + 2)/(2\sqrt{8x^2 + 2x - 3}).
  7. Further simplify expression: Further simplify the expression by dividing the numerator by 22. This gives us 8x+18x2+2x3\frac{8x + 1}{\sqrt{8x^2 + 2x - 3}}.
  8. Match with answer choices: Match the simplified expression with the given answer choices.\newlineThe simplified expression (8x+1)/8x2+2x3(8x + 1)/\sqrt{8x^2 + 2x - 3} matches with answer choice (A).

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