Consider the following information on two assets and three states of the economy:State of theeconomyProbability of state ofeconomyShare A rate ofreturn if state occursShare B rate ofreturn if state occursRecession 20% -0.15 20%Normal 50% 0.20 30%Boom 30% 0.60 40%Suppose Mr Dlamini has twenty thousand Namibian dollars to invest and decides to invest fifteenthousand Namibian dollars in share A and the remainder in share B. Required:a) Determine the expected returns of the two shares [4]b) Determine the variance and standard deviations of the two shares [10]c) Determine the coefficient of variation of the two shares [2]d) Determine the expected return of the portfolio [4]e) Determine the variance and standard deviation of the portfolio [5]

for me what is finding a good play list and going out because i can not lay down and relax so i usually go to a coffee shop. i also use the gum trick and this actually works. another advice is highlighting subjects it really does me remember certain things

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but which class are u may know that first

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\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?