I try to understand the solution that solves the following equation
It is written that the solution is x == Root[-a^3 + (3 a^2 + 2 a b) #1 - 3 a #1^2 + #1^3 & , 1]
What is the #1 symbol means? and is there a numerical solution for the equation?
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#1is the first argument slot for a function, and the syntaxf[#1] &represents a function. For example,#1 + 5 &is the function that adds 5 to its input. The first argument ofRootis the function that we're taking a root of. See the documentation forFunctionandRootfor examples. Also check out this answer. – thorimur Jul 16 '22 at 23:10