Let. Then.
第2题
11. Let, then which of the following is true?
A、(A)does not exist.
B、(B)exists, but f is not continuous at 0.
C、(C)f is continuous at 0 but not differentiable at 0.
D、(D)f is differentiable at 0.
第3题
Letandbe two random variables with CDFsand, respectively. Thenfor allif and only iffor all integers.
第4题
Supposeandare independent random variables. Letand, thenandcan not be independent.
第7题
6. Letand. Are they continuous on?
A、(A) f,g both continuous on.
B、(B) f,g are not continuous on.
C、(C) f is continuous onbut g is not continuous on.
D、(D) f is not continuous onbut g is continuous on.
第9题
3. Letand. Determine whetherandexist or not.
A、(A)andboth exist.
B、(B)exists butdoes not exist.
C、(C)does not exist butexists.
D、(D)anddo not exist.
第10题
7.Let. Doesexists ?
A、(A) Yes, sincefor any, by pinching theorem,exists.
B、(B) Yes, sincefor any, by pinching theorem,exists.
C、(C) No, since there exists somesuch thatand somesuch that, we can't apply pinching theorem.
D、(D) None of above explanation is correct.
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