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Grade: 12
        

Find the no. of points of discontinuity of  f(x) = (1+cos5x) / (1-cos4x)

10 years ago

Answers : (2)

bibhash jha
15 Points
							

since cos function is continuous throughout the R ,

we need to check the denominator which must not be zero .

 

1-cos4x=0 => x=npi/2  , n=integer

 

so domain = R- { npi/2 | n is an integer }

10 years ago
Askiitian.Expert Rajat
24 Points
							

Hi

 

the function would be discontinuous at the points that it is not defined

Those points are :

x=npi/2

10 years ago
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