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function analysis question
12-05-2015, 01:22 PM (This post was last modified: 12-05-2015 01:26 PM by quinyu.)
Post: #3
RE: function analysis question
No, I want the calculator to tell me where it can interpret the function. That's the domain. I want the calculator to tell the domain of an arbitrary function f(x). What I showed was an example. Also, I want the calculator to tell the range - that is, the set of all the values that f(x) has, on the domain. How do I do this?

For your info, on the TI-nspire CAS, the command domain(asin(sqrt(x)),x) results in the output 0<=x<=1, which is what I'm looking for. (This is not the precise input but close enough to it.) While it cannot directly find the range (or at least I know of no method to do so), if I set x=asin(sqrt(y)), and have it solve for y, gives y=(sin(x))^2 (that is the inverse function), with the requirements that sin(x)>=0 and -pi/2<=x<=pi/2. From that point on, I can get a domain again for (sin(x))^2, which is obviously any real number, so that bit is irrelevant. If I solve for the other criteria, it gives max(-pi/2,2*n1*pi)<=x<=min(pi/2,2*n1*pi+pi) as a result. For the principal value (that is, n1=0) of the expression, that means that 0<=x<=pi/2. This is therefore our function range.

So, how do I execute the same sort of procedure on the HP Prime?
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Messages In This Thread
function analysis question - quinyu - 12-05-2015, 05:49 AM
RE: function analysis question - parisse - 12-05-2015, 07:17 AM
RE: function analysis question - quinyu - 12-05-2015 01:22 PM
RE: function analysis question - parisse - 12-05-2015, 03:23 PM
RE: function analysis question - quinyu - 12-05-2015, 05:56 PM
RE: function analysis question - jte - 12-05-2015, 11:04 PM
RE: function analysis question - quinyu - 12-05-2015, 11:39 PM
RE: function analysis question - jte - 12-06-2015, 07:16 AM



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