TS EAMCET · Maths · Differentiation
If , and , then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Given afx+bf1x=x+1 ...i Replacing x→1x, we get af1x+bfx=1x+1 ...ii a×i-b×ii, we get a2fx+abf1x-abf1x+b2fx=ax+a-bx-b a2-b2fx=ax-bx+a-b fx=ax-bxa2-b2+1a+b Now, ddxx2fx=ddxx2ax-bxa2-b2+1a+b =ddxax3-bxa2-b2+x2a+b=3ax2-ba2-b2+2xa+b…
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