ng-equation | Boolean Equation Builder for complex data | Chart library

I have a small data frame which I plot and to which I want to add an equation using greek letters

so I am working on a JAVA/html/php project.

I am reading the OOXML out of a docx and saving all that into a String, cause in that String I can search for the "relevant" tags with the help of regex. After that I save that tags in a MYSQL database. And after that I want to display the data out of the database on a html/php webside.

For example: I found the OOXML tags, that represent "Hello sqrt(2)" while sqrt(2) is "squareroot of 2" (just in symbols) and safed that as a String into my database.

How do we go about numerically solving equations of the sort below using R?

Please note, this can be shown to be convex and there is a separate thread on this. https://stats.stackexchange.com/questions/158042/convexity-of-function-of-pdf-and-cdf-of-standard-normal-random-variable

This question has been posted on the Mathematics Forum to get Closed Form or other Theoretical Approaches, but it seems numerically solutions are the way to go? https://math.stackexchange.com/questions/2689251/solving-equations-with-standard-normal-cdf-and-pdf-optimization

I have a string that needs to be split and converted into numbers. I decided to split the string and put the strings into an array and later convert them into numbers using the Array.prototype.every() function and the Number() function.

When I check the type of the first array element, I see that I still have a string and not a number. Where is my mistake? The answer here makes it look like after splitting JS would convert to number automatically but that isn't happening as evidenced by logging the type of the first element.