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For f(x) = sin x - x^(2) + 1, check weat...

For `f(x) = sin x - x^(2) + 1`, check weather the function is increasing, decreasing or has a point of extremum ?

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`f(x) = sin x - x^(2) + 1`
`therefore` `f'(x) = cos x - 2x`
Now draw the graphs of y = cos x and y = 2x.

From the graph, for `x lt x_(0), cos x gt 2x rArr f'(x) gt 0`
`x gt x_(0), cos x lt 2x rArr f'(x) lt 0`
Hence `x = x_(0)` is the point of maxima.
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CENGAGE-GRAPHS OF TRIGONOMETRIC FUNCTIONS-Exercise
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  2. Find the value of x for which f(x)=sqrt(sinx-cosx) is defined, x in [0...

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  3. Draw the graph of y = tan^(2) x.

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  4. Draw the graph of y = sin x + cos x, x in [0, 2pi].

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  8. Evaluate : [lim(x to 0) (tan x)/(x)], where [*] represents the greates...

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  13. Draw the graph of f(x) = |tan x| + |cot x|.

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  14. Find the number of solutions to cos x = (x)/(10), x gt 0.

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  15. The number of solutions of tanx-m x=0,m >1, in (-pi/2,pi/2) is 1 (b) 2...

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  17. Solve cos x = 1/2.

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  18. Prove that the least positive value of x , satisfying tanx=x+1, lies i...

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  19. Draw the graph of y = (x^(2))/(10) sin x.

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