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    susus's Avatar
    susus Posts: 138, Reputation: 2
    Junior Member
    		  
    #1

    Mar 18, 2011, 07:20 AM
    lim of two functions
    just want to know if I'm correct

    lim (x^4)Sin(1/x) / sin^2(X)
    x->0

    is zero .

    ------------------------------------
    lim x(sqrt(1+4x^2) +2x)
    x->-infinity

    is -1/4
    ??


    is that right ?

    thanks
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
    Senior Member
    		  
    #2

    Mar 18, 2011, 08:23 AM
    Yep, they're both correct!
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
    		  
    #3

    Mar 18, 2011, 08:27 AM

    Yes, both are correct. Very good!

    ** Edit: jcaron2 - you beat me to it!
    susus's Avatar
    susus Posts: 138, Reputation: 2
    Junior Member
    		  
    #4

    Mar 18, 2011, 09:41 AM
    Comment on ebaines's post
    It means that I got a full answer in the exam ;)))))))))))))))))
    Thanksssssssss
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