Hi, I will continue mr fantastic idea...
Why you can apply l'Hospital's rule?
Let we see what happens to the whole expession when :
Next, for every
Applying l'Hospital's rule:
Now by the Fundamental Theorem of Calculus:
The limit is still from the form of , applying l'Hospital's rule again...
...............in this manner, if L'Hospitals rule is applied, at the oreder differentiation, we get:-
putting x=0, we get:-
am i right?
oh yes... actually my denominator was right, but i differentiated the numerator 4 times instead of 3 times....now i have got it correct...