Find the limit of 1/(1-cos(theta)), as theta goes to 0 from the right.

the propertiesof the set R of real numbers.

we will prove the triangular inequality here.
these are steps
we will define a distance on R, the set of real numbers.
we will also define what we mean by a norm

Show that if f°g is surjective then f is surjective.
Show that if g°f is injective then f is injective.
we will use all these results to prove cantor set .
we will define what we mean by an equivalence relation
what does it mean for R to be reflexive?
#maths #education #MIt

what does it mean for R to be transitive?

what does it mean for R to be symmetric?
what does it mean for R to be antisymmetric

Define the range of a function.