Can any body here prove that 1-1+1-1+1-1+1-1=1/2
And What is known as this series?

This is known as grandi's series, the proof is in the explanation

Step-by-step explanation:

grandi's series, is given by = 1-1+1-1+1-1+1-1...

1 - = 1 - (1-1+1-1+1-1+1-1) = 1-1+1-1+1-1+1-1 =

1- =

+ = 1

2 = 1

= 1/2

This is known as grandi's series, the proof is in the explanation

Step-by-step explanation:

grandi's series,  is given by = 1-1+1-1+1-1+1-1...

1 -  = 1 - (1-1+1-1+1-1+1-1) = 1-1+1-1+1-1+1-1 =  

1-  =  

+  = 1

2 = 1

= 1/2

Step-by-step explanation:

the correct answer to your question is a. 4^4

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required rate of return = 0.166 = 16.6%

step-by-step explanation:

under the capital asset pricing model (capm), the required or expected rate of return for a particular security or asset is given using the formula:

required rate of return = risk-free rate + beta*(market risk premium)

we are given that;

risk-free rate = 4% = 0.04

beta = 1.4

market risk premium = 9% = 0.09

we simply plug these values into the above formula;

required rate of return = 0.04 + 1.4*(0.09)

required rate of return = 0.04 + 0.126

required rate of return = 0.166 = 16.6%