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Describe and correct the error, given the functions f(x)=3x-5.  So is this correct...

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lflint29 | Student, College Freshman | eNoter

Posted May 15, 2013 at 3:32 PM via web

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Describe and correct the error, given the functions f(x)=3x-5. 

So is this correct f(5)=3(5)-5 5f=15-5  5f=10 f=2

 

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llltkl | College Teacher | Valedictorian

Posted May 15, 2013 at 3:58 PM (Answer #1)

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The word function is derived from a Latin word meaning operation.

Thus, by a given function f(x), a set of mathematical operation/s is meant. It should not be deciphered as a mere multiplication of f and x.

Given function in the problem here, is f(x)=3x-5.

That means, in order to get f(data) we have to do the operation:  (3*data - 5).

Thus f(5) = 3*5 - 5 = 15 - 5 = 10.

Therefore, the solution of f(x) at x =5 yields f(5) = 10.

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