The area bounded by the curve \[y=f(x)\], x-axis and ordinates x = 1 and \[x=b\]is \[\frac{5}{24}\pi \], then \[f(x)\] is [RPET 2000]

\[(b-1)\sin (3x+4)+3\cos (3x+4)\]

\[3(x-1)\cos (3x+4)+\sin (3x+4)\]

\[(b-1)\cos (3x+4)+3\sin (3x+4)\]

The area bounded by the curve \[y=f(x)\], x-axis and ordinates x = 1 a

1.	The area bounded by the curve \[y=f(x)\], x-axis and ordinates x = 1 and \[x=b\]is \[\frac{5}{24}\pi \], then \[f(x)\] is [RPET 2000]
A.	\[3(x-1)\cos (3x+4)+\sin (3x+4)\]
B.	\[(b-1)\sin (3x+4)+3\cos (3x+4)\]
C.	\[(b-1)\cos (3x+4)+3\sin (3x+4)\]
D.	None of these
Answer» B. \[(b-1)\sin (3x+4)+3\cos (3x+4)\]

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The area bounded by the curve \[y=f(x)\], x-axis and ordinates x = 1 and \[x=b\]is \[\frac{5}{24}\pi \], then \[f(x)\] is [RPET 2000]

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