  Centrale des maths - centraledesmaths.uregina.ca  Dilemmes & doutes    « D & D »    Sujet: domain of a function   nouvelle recherche

7 articles trouvés pour ce sujet.    Page1/1            The inverse of y = x(x - 2) 2016-12-21 Sasha pose la question :Hello, I recently stumbled upon this question and I haven't been able to figure it out. Why is the inverse of y=x(x-2) not a function? Suggest a domain restriction which would ensure that the inverse is a function. Thank You :)Penny Nom lui répond.     The domain and range of a function 2016-02-19 Genius pose la question :State the domain and range g(x)=x(x-1)Penny Nom lui répond.     The range of a function with a finite domain 2016-01-25 Hannah pose la question :Solve y=(1⁄4)x-1 if the domain is (-4,-2,0,2,4). I don't get how to do this. Can anyone help?Penny Nom lui répond.     What is the domain of f(x)=sin(ln(x))/ln(x)? 2013-02-06 Behrooz pose la question :Hi, the following problem may be interesting: What is the domain of f(x)=sin(ln(x))/ln(x)? Be careful, domain is not obvious. Best regards BehroozPenny Nom lui répond.     Domain of a function 2002-07-20 Andy pose la question :I'm having difficulty in finding the domain of 1/(x2 -2x + 4) one over x squared minus 2 x plus 4. Penny Nom lui répond.     An equation involving x to the x 2000-07-22 Joy Peter pose la question : I am joy, a teacher teaching Maths at the secondary level and while solving a sum came to this stage when i got xx (1 + log x) = 0, by which we can conclude that xx = 0 or 1 + log x = 0. If xx = 0, than what should be the value of x? I feel that the value of x should then be 0 (zero) but then how do I explain this to the students as we also know that anything to the power of 0 is 1 but here 0 raised to 0 is 1. If this is not defined then how do I explain this?Penny Nom lui répond.     The Range of a Function. 1997-09-12 Karel Marek pose la question :Math Is Book 6 (Ebos/Tuck) question 5(b) gives a surprising answer at the back of the book..The question is:Indicate the domain and range for this: y = sqr(x-9) (Square root of) The answer for the domain is x>=9 which is not surprisingly, but the range is y>=0, yER ... which I could understand if you were not allowed to transform the equation into x as the subject.. But all example on the facing page DO TRANSFORM the equation at will with x and/or y as the subject..Can you explain this... ??Chris Fisher lui répond.      Page1/1    Centrale des maths reçoit une aide financière de l’Université de Regina et de The Pacific Institute for the Mathematical Sciences.    Qui sommes-nous :: carte du site :: our english site