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A right triangle is drawn in a semici...

A right triangle is drawn in a semicircle of radius `1/2` with one of its legs along the diameter. If the maximum area of the triangle is `M` , then the value of `32sqrt(3)M c` is______

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The correct Answer is:
9

`BCxxCe=ACxxCD`
`therfore (BC)(CE)=x(1-x)`
But BC=CE
`there BC =sqrt(x(1-x))`
`therefore Area triangle=xsqrt(x-x^(2))/(2)`
or `triangle=(x^(3)-x^(4))/(4)`
or `(d triangle^(2))/(dx)=(3x^(2)-4x^(3))/(4)`
If `(d triangle^(2))/(dx)=0` then `x=3/4` which is the point of maxima
Hence maximum area is `(3 sqrt(3))/(32)`
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CENGAGE-MONOTONICITY AND MAXIMA MINIMA OF FUNCTIONS-Exercise (Numerical)
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  4. Leg f(x) be a cubic polynomial which has local maximum at x=-1a n df(x...

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  5. consider P(x) to be a polynomial of degree 5 having extremum at x=-1,1...

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  6. If m is the minimum value of f(x , y)=x^2-4x+y^2+6y when xa n dy are s...

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  7. For a cubic function y=f(x),f^(x)=4x at each point (x , y) on it and i...

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  8. Number of integral values of b for which the equation (x^3)/3-x=b has ...

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  9. L e tf(x)={x+2,x<-1x^2,-1lt=x<1(x-2)^2,xgeq1 Then number of times f^(...

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  10. The number of nonzero integral values of a for which the function f(x)...

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  11. L egf(x)={x^(3/5),ifxlt=1-(x-2)^3,ifx >1 Then the number of critical ...

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  12. A right triangle is drawn in a semicircle of radius 1/2 with one of...

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  13. A rectangle with one side lying along the x-axis is to be inscribed in...

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  14. The least integral value of x where f(x)=(log)(1/2)(x^2-2x-3) is monot...

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  15. The least area of a circle circumscribing any right triangle of area 9...

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  16. L e tf(x)={|x^2-3x|+a ,0lt=x<3/2-2x+3,xgeq3/2 If f(x) has a local max...

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  17. Let f(x)=30-2x -x^3, the number ofthe positive integral values of x wh...

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  18. Let f(x) ={{:(x(x-1)(x-2),(0lexltn),sin(pix),(nlexle2n):} least valu...

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  19. Number of critical point of the function f(X) =x+sqrt(|x|) is .

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  20. consider f(X) =(1)/(1+|x|)+(1)/(1+|x-1|) Let x(1) and x(2) be point wh...

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