What are the number of roots in this equation? (x+7)(x-2)^2(x^2-4)(x+1)^4
1 answer:
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Answer:
and
Step-by-step explanation:
Note that if then
Functions do not have vertical asymptotes at all.
Vertical asymptotes have functions
Functions and
have the same vertical asymptotes (when
).
Functions and
have the same vertical asymptotes (when
). See attached diagram
Answer: 0.3439
Step-by-step explanation:
Given :The last four digits for telephone numbers are randomly selected (with replacement).
Here , each position can be occupied with any of the digit independently .
Total digits = 10
Total digits other than 0 = 9
For each digits , the probability that it is not 0 =
If we select 4 digits , The probability of getting no 0 =
(By multiplication rule of independent events)
Now , the probability that for one such phone number, the last four digits include at least one 0. = 1- P(none of them is 0)
=1- 0.6561=0.3439
Hence, the probability that for one such phone number, the last four digits include at least one 0. is 0.3439 .