8. let x be a normed space and x' its dual space. if xnot equal to{0}, show that x' cannot be {0}.

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false

step-by-step explanation:

false : it can not go to 9 the highest that part can go is 7

here is your proof

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!