Hi everyone...
I was looking for an inverse function to: y = x^5 - 3x^4 + 7
What WA gave was the following: y(x) = Root[#1^5-3 #1^4-x+7&, 1]
y(x) = Root[#1^5-3 #1^4-x+7&, 2]
y(x) = Root[#1^5-3 #1^4-x+7&, 3]
y(x) = Root[#1^5-3 #1^4-x+7&, 4]
y(x) = Root[#1^5-3 #1^4-x+7&, 5]
My questions is....what is this?! lol
Even when I whittle this down to: y = x^5 - 3x I still get a similar output.
I'm pretty familiar with the algebraic process of finding an inverse, and while I do realize these are more complicated functions, I still don't understand what WA's 'notation' stands for. However, I know what "Root" means, it's the rest I have a problem with.
Any ideas please?
Thanks