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TS EAMCET · Maths · Differentiation

If \(f(x)=\left|\begin{array}{ccc}x^3+x & x+1 & x-2 \\ 2 x^3+3 x-1 & 3 x & 3 x-3 \\ x^3+2 x+3 & 2 x-1 & 2 x-1\end{array}\right|\), then \(\frac{d}{d x}(f(x))\) is equal to

  1. A 24
  2. B 0
  3. C -6
  4. D 12
Verified Solution

Answer & Solution

Correct Answer

(A) 24

Step-by-step Solution

Detailed explanation

Given, \(f(x)=\left|\begin{array}{ccc}x^3+x & x+1 & x-2 \\ 2 x^3+3 x-1 & 3 x & 3 x-3 \\ x^3+2 x+3 & 2 x-1 & 2 x-1\end{array}\right|\) Applying \(R_1 \rightarrow R_1+R_3-R_2\), we get…