about arccos function in R: NaN produced
54984
acos(1) returns NaN for some values, not others
55420
How does the chain rule work for functions from vectors to vectors?
54914
Simulate AR(1) process in R with specified nonzero mean and AR coefficient
130456
Why does Double.NaN==Double.NaN return false?
152781
Chain rule for multivariable functions confusion
76490
Proving that $\cos(\arcsin(x))=\sqrt{1-x^2}$
148624
Replacing Tan[x] with Sin[x]/Cos[x]
31379
Relationship between $\tanh x$ and $\arctan x$
134510
How do you get $\rm{var}(\Theta -\hat\theta) = \rm{var}(\Theta)$?
60288
Why is $\arctan(x)=x-x^3/3+x^5/5-x^7/7+\dots$?
145521
Why does $\arctan(x)= \frac{1}{2i}\log \left( \frac{x-i}{x+i}\right)+k$?
69916
Strange behavior of abs(x) in PGF Plots
105897
Evaluate the limit containing $\arctan{x}$ and $\arcsin{x}$
104453
A question about the arctangent addition formula.
143949
How to get nth derivative of $\arcsin x$
55479
Negative R squared contradicts ssa/sst?
42719
Warning message: In `...` : invalid factor level, NA generated