If a curve \[y=a\sqrt{x}+bx\] passes through the point (1, 2) and the area bounded by the curve, line \[x=4\] and x-axis is 8 sq. unit, then [MP PET 2002]

If a curve \[y=a\sqrt{x}+bx\] passes through the point (1, 2) and the

1.	If a curve \[y=a\sqrt{x}+bx\] passes through the point (1, 2) and the area bounded by the curve, line \[x=4\] and x-axis is 8 sq. unit, then [MP PET 2002]
A.	\[a=3,\,b=-1\]
B.	\[a=3,\,b=1\]
C.	\[a=-3,\,b=1\]
D.	\[a=-3,\,b=-1\]
Answer» B. \[a=3,\,b=1\]

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If a curve \[y=a\sqrt{x}+bx\] passes through the point (1, 2) and the area bounded by the curve, line \[x=4\] and x-axis is 8 sq. unit, then [MP PET 2002]

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