In general, what do you need to show to prove the following?:
(For example: to prove something is a group you'd show closure,
associative, identity, and invertibility)
a. Ring
b. Subring
c. Automorphism of rings
d. Ring homomorphism
e. Integral domain
f. Ideal
g. Irreducible
h. isomorphic
Prove that every sequence in a discrete metric space converges
and is a Cauchy sequence.
This is all that was given to me... so I am unsure how I am
supposed to prove it....
How do you determine the
properties of steam or refrigerant 134a from the properties if you
know only specific internal energy and specific volume (or specific
enthalpy and specific entropy) at the thermodynamic
state?
NOTE- If it is true, you need to prove it and If it is false,
give a counterexample
f : [a, b] → R is continuous and in the open interval (a,b)
differentiable.
a) If f(a) ≥ f(b), then exists a ξ ∈ (a,b) with f′(ξ) ≤ 0.(TRUE
or FALSE?)
b) If f is reversable, then f −1 differentiable. (TRUE or
FALSE?)
c) If f ′ is limited, then f is lipschitz. (TRUE or FALSE?)
NOTE- If it is true, you need to prove it and If it is false,
give a counterexample
f : [a, b] → R is continuous and in the open interval (a,b)
differentiable.
a) If f(a) ≥ f(b), then exists a ξ ∈ (a,b) with f′(ξ) ≤ 0. (TRUE
or FALSE?)
b) If f is reversable, then f −1 differentiable. (TRUE or
FALSE?)
c) f is constant ⇐⇒ ∀x∈(a,b): f′(x)=0 (TRUE or FALSE?)
2. Prove the following properties.(b) Prove that x + ¯ xy = x + y.3. Consider the following Boolean function: F = x¯ y + xy¯ z +
xyz(a) Draw a circuit diagram to obtain the output F. (b) Use the
Boolean algebra theorems to simplify the output function F into the
minimum number of input literals.
Prove that cardinality is an equivalence relation. Prove for all
properties (refextivity, transitivity and symmetry). Please do this
problem and explain every step. The less confusing notation the
better, thanks!