Applying the formula, we have:

`int(dx)/(sqrt(49-x^2))`

`=int(dx)/(sqrt((7)^2-x^2))` `=sin^-1(x/7)+K`

`=int(dx)/(sqrt((7)^2-x^2))`

`=sin^-1(x/7)+K`

We could also write this answer as:

`arcsin (x/7)+K`

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