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Is the function defined by f(x)=x^2-sinx...

Is the function defined by `f(x)=x^2-sinx+5`continuous at `x=pi`?

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`f(x) = x^(2) - sin x + 5 `
at x = `pi`
`f(pi) = pi^(2)- sin pi + 5 = pi^(2) + 5 `
L.H.L `underset(x to pi^(-))(lim)f(x)`
Let `pi - h = x `
`rArr pi + h to pi`
`rArr h to 0 `
`underset(h to 0)(lim)f(pi - h)`
`underset(h to 0)(lim)(pi - h)^(2)- sin ( pi- h)+ 5`
`underset(h to 0)(lim)(pi - h)^(2)- sin ( pi- h)+ 5`
`underset(h to 0)(lim)(pi - h)^(2)- sin h + 5`
`(pi - 0 ) ^(2) - sin 0 + 5 pi^(2) + 5 `
R.H.L. `underset(x to pi^(+))(lim)f(x)`
`underset(h to 0)(lim)f(pi + h)`
`underset(h to 0)(lim)(pi + h)^(2)- sin ( pi+ h)+ 5`
`underset(h to 0)(lim)(pi + h)^(2) + sin h + 5`
`(pi + 0) ^(2) + sin 0 + 5 pi^(2) + 5 `
`:'` L.H.L. `f(pi)` R.H.L.
`:.` f(x) is contnuous at x = ` pi` .
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NAGEEN PRAKASHAN-Continuity and Differentiability-Exercies 5.1
  1. f(x){{:(2x "," if x lt 0 ),(0"," if 0 le x le 1),(4x "," if x gt 1 ):}

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  2. f(x) {{:(-2"," if x le -1),(2x"," if -1lt x le 1),(2"," if x gt 1):}

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  3. Find the relationship between a and b so that the function f defined ...

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  4. For what value of lambdais the function defined by f(x)={lambda(x^2-2...

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  5. Show that the function defined by g(x)=x-[x] is discontinuous at all i...

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  6. Is the function defined by f(x)=x^2-sinx+5continuous at x=pi?

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  7. Discuss the continuity of the following functions:(a) f(x) = s in x + ...

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  8. Discuss the continuity of the cosine, cosecant, secant and cotangen...

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  9. Find all points of discontinuity of f, wheref(x)={(sinx)/x , ifx<0x+1,...

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  10. Determine if f defined byf(x)={x^2sin1/x , ifx!=0 0, ifx=0

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  11. Examine the continuity of f, where f is defined byf(x)={sinx-cosx , if...

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  12. f(x) = {{:((k cosx )/((pi - 2x)"," if x ne (pi)/(2))),(3"," if x = (p...

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  13. f(x) = {{:(kx^(2)"," if x le 2),(3", " if x gt 2):} at x = 2

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  14. Find the value of k for which f(x)={k x+1 when xlt=picosx when x gtpi

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  15. Find the values of k so that the function f is continuous at the indi...

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  16. Find the values of a and b such that the function defined by f(x)={...

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  17. Show that the function defined by f(x)=cos(x^2)is a continuous functi...

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  18. Show that the function defined by f(x) = | cos x |is a continuous fun...

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  19. Examine that sin | x | is a continuous function.

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  20. Find all the points of discontinuity of f defined by f(x)" "=" "|" ...

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