1.

What is the mathematical expression for a function to be strictly increasing on (a,b)?

A. x1 < x2 ⇒ f(x1) < f(x2) ∀ x1, x2 ∈ (a,b)b) x1 < x2 ⇒ f(x1) ≥ f(x2) ∀ x1, x2 ∈ (a,b)c) x1 = x2 ⇒ f(x1) ≤ f(x2) ∀ x1, x2 ∈ (a,b)d) x1 = x2 ⇒ f(x1) < f(x2) ∀ x1, x2 ∈ (a,
B. ?a) x1 < x2 ⇒ f(x1) < f(x2) ∀ x1, x2 ∈ (a,b)b) x1 < x2 ⇒ f(x1) ≥ f(x2) ∀ x1, x2 ∈ (a,b)
C. x1 = x2 ⇒ f(x1) ≤ f(x2) ∀ x1, x2 ∈ (a,b)
D. x1 = x2 ⇒ f(x1) < f(x2) ∀ x1, x2 ∈ (a,b)
Answer» B. ?a) x1 < x2 ⇒ f(x1) < f(x2) ∀ x1, x2 ∈ (a,b)b) x1 < x2 ⇒ f(x1) ≥ f(x2) ∀ x1, x2 ∈ (a,b)


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