Yet another problem for your brilliant minds to ponder!
Simplify (f(x+h) - f(x))/h, where f(x) = 2x+3
Here's what I did, please tell me if I made an error.
2(x+h) +3 - 2x - 3 / h
2x + 2h + 3 - 2x - 3 /h
2h/h
2
Thank you for your help!
burnbird16 wrote:Yet another problem for your brilliant minds to ponder!
Simplify (f(x+h) - f(x))/h, where f(x) = 2x+3
Here's what I did, please tell me if I made an error.
2(x+h) +3 - 2x - 3 / h
2x + 2h + 3 - 2x - 3 /h
2h/h
2
Thank you for your help!
burnbird16 wrote:I'm sorry, but I don't know how to do what you just did.
Code: Select all
[tex]\frac{2(x+h) +3 - (2x + 3)} { h}[/tex]
[tex]\frac{2x+2h +3 - 2x - 3} { h}[/tex]
[tex]\frac{2h} { h}=2[/tex]
burnbird16 wrote:Ok, thank you. So was I correct,then? If so, I have a few more I would like for you to look at, if you have time.
burnbird16 wrote:... I have a few more I would like for you to look at, if you have time.
burnbird16 wrote:...
30. a) The graph of a quadratic function has x-intercepts, -1 and 3, and a range consisting of all numbers less than or equal to 4. Determine an expression for the function. (I tried to reverse factor, but I got a positive parabola, not a negative one.)
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