1.

If the curve `y=a sqrt(x)+bx` passes through `P(1,2)` and lies above the x-axis for `x in [0,9]` and the area bounded by the curve, the x-axis and `x=4` is 8 sq. units the `2a-3b=`A. 6B. 9C. 0D. 10

Answer» Correct Answer - B
`a+b=2 & underset(0)overset(4)(int)(asqrt(x)+bx)dx=8implies(2a)/(3)xx8+(b)/(2)xx16=8implies(2a)/(3)+b=1`


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