*Legend***
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**Square root of x = sqrt(x)**
**x squared = x^2**
**sin(x)**
**cos(x)**
**tan(x)**
**inverse tangent = arctan(x)**
**inverse cosine = arccos(x)**
**inverse sine = arcsin(x)**
**absolute value of x = abs(x)**

**To add a function, click on add
function and type in the function using the variable x. Do not type
y =!! You can add as many functions as you need. Delete function
will delete the last function entered.**