. In general, you can skip the multiplication sign, so `5x` is equivalent to `5.x`. In general, you can skip parentheses, but be very careful: e^3x is `e^3x`, and e^(3x) is `e^(3x)`. Also, be careful when you write fractions: 1/x^2 ln(x) is `1/x^2 ln(x)`, and 1/(x^2 ln(x)) is `1/(x^2 ln(x))`. If you skip parentheses or a multiplication sign, type at least a whitespace, i.e.
Write sin x (or even better sin(x)) instead of sinx. Sometimes I see expressions like tan^2xsec^3x: this will be parsed as `tan^(2.3)(x sec(x))`. To get `tan^2(x)sec^3(x)`, use parentheses: tan^2(x)sec^3(x). Similarly, tanxsec^3x will be parsed as `tan(xsec^3(x))`. To get `tan(x)sec^3(x)`, use parentheses: tan(x)sec^3(x).
Note: The normal distribution table, found in the appendix of most statistics texts, is based on the standard normal distribution, which has a mean of 0 and a standard deviation of 1.To produce outputs from a standard normal distribution with this calculator, set the mean equal to 0 and the standard deviation equal to 1.
From the table below, you can notice that sech is not supported, but you can still enter it using the identity `sech(x)=1/cosh(x)`. If you get an error, double-check your expression, add parentheses and multiplication signs where needed, and consult the table below. All suggestions and improvements are welcome.
Please leave them in comments.