You can find the value of ln(-1)¹⁰ by examining the definition of ln(x): the result z satisfies eᶻ=x. For x=-1, that means the z that satisfies eᶻ=-1. Then we know z from euler’s identity. Raise to the 10, and there’s our answer. And like you pointed out, it’s not a particularly helpful answer.
You can find the value of ln(-1)¹⁰ by examining the definition of ln(x): the result z satisfies eᶻ=x. For x=-1, that means the z that satisfies eᶻ=-1. Then we know z from euler’s identity. Raise to the 10, and there’s our answer. And like you pointed out, it’s not a particularly helpful answer.