1. Find the limit, if it exists. (If an answer does not exist, enter DNE.)(a)lim x→[infinity] [ln(5 + 3x2) − ln(8 + x2)](b)lim x→[infinity] [ln(5 + 3x2) − ln(8 + x)] (c)lim x→[infinity] [ln(5 + 3x) − ln(8 + x2)]2. Find the limit, if it exists. (If an answer does not exist, enter DNE.)lim x → [infinity] arctan(ex)