The area bounded by the curves \[y=f(x),\] the x-axis, and the ordinates \[x=1\]and \[x=b\] is \[(b-1)\sin (3b+4)\]. Then \[f(x)\] is

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

The area bounded by the curves \[y=f(x),\] the x-axis, and the ordinat

1.	The area bounded by the curves \[y=f(x),\] the x-axis, and the ordinates \[x=1\]and \[x=b\] is \[(b-1)\sin (3b+4)\]. Then \[f(x)\] is
A.	\[(x-1)\cos (3x+4)\]
B.	\[sin(3x+4)\]
C.	\[\sin (3x+4)+3(x-1)\cos (3x+4)\]
D.	None of these
Answer» D. None of these

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The area bounded by the curves \[y=f(x),\] the x-axis, and the ordinates \[x=1\]and \[x=b\] is \[(b-1)\sin (3b+4)\]. Then \[f(x)\] is

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