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If the curve y=a sqrt(x)+bxpasses 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=

Answer»

6
9
0
10

Solution :`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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