#### Question

a.

km = k0 [1 + β (t1 – t2)/2].

b.

km = k0 [1 + (t1 + t2)/2].

c.

km = k0 [1 + β (t1 + t2)/3].

d.

km = k0 [1 + β (t1 + t2)/2].

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