Recent content by houssamxd

Homework Statement Homework Equations \frac{d}{dx} The Attempt at a Solution i couldn't do it because we didnt learn this type of question

Homework Statement Block A sitting on top of block B has a mass mA = 10 kg and is attached to the wall by mass less string. Block B, mass mB = 35 kg, is pulled by a force F = 80 N. The surface under block B is frictionless. If the coefficients of friction for block A and B areμs = 0.4 and...

sorry about that but anyway thanks for your ttime and help i owe you one

so I am right it doesn't exist

but which is correct is my answer when x->2+ correct

i assumed that x=2.1 as we approach 2 from the right side the when i put it under the when we put it under the sqaure and subtract we get sprt(-0.1) which is undefined

Homework Statement lim x-> 2+ f(x)=sqrt(4-x^2)whats the value of the following function?? Homework Equations The Attempt at a Solution i tried and got the answer as does not exist but some people got it as 0 which is the correct answer

thanx a lot man i owe you one wish me luck for tomorrows exam

non removable but do they both count as discontinuities

i guess it has a removable one right??

but if u factorise it and cancel the common you only get -4 as the point of discontinuity

0 but if u factorize the denominator and cancel you will only get -4 as a point of discontinuity try it yourself

well basically we just have to use the function and find the points where its disconitinuous i.e in the graph there is a hole or a jump check here http://www.dummies.com/how-to/content/how-to-determine-whether-a-function-is-discontinuo.html

well that's what u have to find where is it discontinuous i have an exam on this but its not clear yet to me

removable discontinuity Homework Statement the following function f(x)=(4-x)/(16-x^2) is discontinuous at? i got at -4 but some of my friends say its 4, -4 how is that possible