THE NATURAL EXPONENTIAL FUNCTION
Main topic
lim as X appr. infinity, lnX=infinity
when X>0
lim as X appr. zero from the right, lnX= -infinity
X<0
to every real number X there corresponds exactly one positive real number Y such that lnY=X
Subtopic
The letter e denotes the poss. real mumber
lne=1
e~2.71828
e^X=Y if and only if lnY=X
If X is any realnumber
Dxe^u=e^uDxu
If u=g(x) and g is differentiable.
CALCULUS
INTEGRALS
v
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