The community will undergo maintenance on October 16th at 10:00 PM PDT and will be unavailable for up to one hour.
Has red equation one symbolic solution?
See please the picture and the Mathcad 15 sheet in attach!
Solved! Go to Solution.
Sorry, more simple
The 'official' (according ISO 80000-2) symbols for tangent and inverse hyperbolic sine are respectively:
'tan' (The standard explicitly mentions that 'tg' should not be used!)
'arsinh' (no 'c' between r and s ! Note that the inverse of the sine function is officially 'arcsin', with 'c'.)
Luc
Thanks, Luc!
And what about tan(a)^2 and tan^2 a?
According to the standard:
(sin x)², (cos x)², etc. are often written sin² x, cos² x, etc.
Note that the standard does not use:
sin(x), cos(x) etc. But it does use function definitions like f(x).
In Mathcad (sin(x))² equals sin(x)², but you could define the function sin²(x):=sin(x)² , which conforms to the standard.
Note also that sin, cos etc, are (to be) written in upright font because they are generally defined functions.
The function f is to be written in italic font. It's fairly easy to define sin:=sin and cos:=cos in Mathcad, when the font for Variables (tag) is set to italic.
Success!
Luc
Michael Kirsanov and Maple give us one simple symbolic solution atan(sqrt(5) - 1) with accuracy 1.3%
One more version of the visual solution