I keep getting the answer of 1, but I'm not sure if that's correct. Any help would be appreciated. Thank you!
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lim [f(x+h) - f(x)] / h = [2(x+h)-7 - (2x - 7)] / h =
h -> 0
lim (2x + 2h - 7 - 2x + 7) / h = 2h/h = 2
h -> 0
h -> 0
lim (2x + 2h - 7 - 2x + 7) / h = 2h/h = 2
h -> 0
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God, who does things like that? Are you crazy??? I don't even get the (), F, X, etc. etc. All I can do in math is square roots and times tables. And more, of course, but you'd have to be a professor to work THAT (your thing) out! Just type it in a search engine or Mathematical website!
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the ans is 2
[ 2[x+h] -7 -(2x-7)]/h =2h/h = 2 for any h
[ 2[x+h] -7 -(2x-7)]/h =2h/h = 2 for any h