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Let f(x)=30-2x -x^3, the number ofthe po...

Let `f(x)=30-2x -x^3`, the number ofthe positive integral values of x which does satisfy `f(f(f(x)))) gt f(f(-x))` is

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The correct Answer is:
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`f(X)=30-2x-x^(3)`
`f(X)=-2-3xA^(2)lt0`
`rarr` f(X) is decreasing funciton
Henne `f(f(fx))gtf(f-x))`
`rarr f(f(x))ltf(-x)`
`rarr f(x)gt-x`
`rarr 30-2x-x^(3)gt-x`
`rarr x^(3)+x-30lt0`
`rarr(x-3)(x^(2)+3x+10)lt0`
`rarr xlt3`
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CENGAGE-MONOTONICITY AND MAXIMA MINIMA OF FUNCTIONS-Exercise (Numerical)
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  3. Let f(x)={{:(|x^(3)+x^(2)+3x+sinx(3+sin(1)/(x)), x ne 0), (0,x=0):} ...

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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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