My desk of Integrals has the final circumstance ##int frac dx x^two+a^two ## as being a 'normal' integral way too, not simply the situation where by ##a=one##. But I do think this remaining a Calculus research problem it is expected of your OP to figure out how to make it https://gabletoppak.com/customized-packaged-drinking-water-with-your-brand-logo/