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

7 years ago

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### Answers : (2)

```										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 }
```
7 years ago
```										Hi

the function would be discontinuous at the points that it is not defined
Those points are :
x=npi/2
```
7 years ago

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