Hi,
Needing help on the following limits, its been a long time since I have done trig, and have forgotten allot of trig properties.. any help would be appreciated on workings.
Hi,
Needing help on the following limits, its been a long time since I have done trig, and have forgotten allot of trig properties.. any help would be appreciated on workings.
Note that
now take the limit. you should be able to take it from here
Hi,
Needing help on the following limits, its been a long time since I have done trig, and have forgotten allot of trig properties.. any help would be appreciated on workings.
The key formula for these is
the first one can be written :
The second one can be solved by making the substitution t=1/x
Ok, Well i think I have got it now for the first question...
Using
I then took
Setting t = x^4
is equal to
Setting t = x^2
Taking the inverse:
yes. but you didn't have to drag it out like that, just make two substitutions at once (if necessary, if you just said the limit was 1, i doubt your professor would mind).
Now let and , then we have
(By the way, you can't just take inverses like that)