How many solutions exist for the given equation?
1 answer:
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Answer:
Radius of the convergence is R =
and,
The Interval of convergence is
Step-by-step explanation:
Given function : Σ(21x)^k
Now,
Using the ratio test, we have
R =
or
R =
or
R =
now,
for convergence R|x| < 1
Therefore,
< 1
or
and,
Radius of the convergence is R =
and,
The Interval of convergence is
The missing values in the question are shown in bold forms below.
A manufacturer is interested in the output voltage of a power supply used in a PC. Output voltage is assumed to be normally distributed, with standard deviation of 0.25 V, and the manufacturer wished to test , using n = 10 units. Statistical Tables and Charts
(a) The critical region is or
. Find the value of
Answer:
∝ = 0.032 (to 3 decimal place)
Step-by-step explanation:
From the given information:
From the z - tables;