MCQ
If $y = a{e^x} + b{e^{ - x}} + c$ where $a,b,c$ are parameters then $y''' = $
- A$y$
- ✓$y'$
- C$0$
- D$y''$
✓
Answer
Correct option: B.
$y'$
b
(b) $y = a{e^x} + b{e^{ - x}} + c$ ==> $y' = a{e^x} - b{e^{ - x}}$
(b) $y = a{e^x} + b{e^{ - x}} + c$ ==> $y' = a{e^x} - b{e^{ - x}}$
==> $y'' = a{e^x} + b{e^{ - x}}$ ==>$y''' = a{e^x} - b{e^{ - x}} = y'$.
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