How Do You Calculate f(x+Δx) for the Function x²+3x+2?

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SUMMARY

The discussion focuses on calculating f(x+Δx) for the quadratic function f(x) = x² + 3x + 2. Participants confirm that the correct expression for f(x+Δx) is (x+Δx)² + 3(x+Δx) + 2, clarifying that the linear term should include the coefficient 3, not 2. A typo was acknowledged in the initial query regarding the linear term. This highlights the importance of accuracy in mathematical expressions.

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it's just something thechnical



let's say i have the function x2+3x+2

when they say f(x+[itex]\Delta[/itex]x)



is it (x+[itex]\Delta[/itex]x)2+2(x+[itex]\Delta[/itex]x)+2

or

another way?
 
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stonecoldgen said:
it's just something thechnical



let's say i have the function x2+3x+2

when they say f(x+[itex]\Delta[/itex]x)



is it (x+[itex]\Delta[/itex]x)2+2(x+[itex]\Delta[/itex]x)+2

or

another way?

It's that. Except you have 3 in the first expression and a 2 in the second in the linear term. Typo, I guess?
 
Dick said:
It's that. Except you have 3 in the first expression and a 2 in the second in the linear term. Typo, I guess?

thanks lot and yeah, typo
 

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