Solved
Root function
Please could someone assist me with the following error:
Error states the value must be a function.
Not sure what I am doing wrong here. Variables b, n, As, and d are defined previously.
Its hard to debug just a picture!
Whenever possible you always should attach the worksheet itself and in case you are using Prime you also have to state which version of Prime you are using.
Problem most likely is because there is no multiplication dot between As and the opening parenthesis. That way As is used like a function name and not like a variable. Type an explicit multiplication after As and see if it helps.
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