New type of pump can drain a certain pool in 5 hours. an older pump can drain the pool in 15 hours. how long will it take both p
1 answer:
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Firstly , we will check continuity at x=1
we can use method
Suppose, f(x) is continuous at x=c
then it must satisfy
firstly , we can find limit
so, we get
now, we can find f(1)
so, we got
so, this is continuous at x=1
Hence , option-D...........................Answer