find the difference quotient, f(x-h) - f(x) / h h is not equal to 0 f(x) = -2x - 7
E elisabeth New member Joined Oct 28, 2007 Messages 3 Oct 28, 2007 #1 find the difference quotient, f(x-h) - f(x) / h h is not equal to 0 f(x) = -2x - 7
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,216 Oct 28, 2007 #2 How is this trig?. It's basic calculus.
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,216 Oct 28, 2007 #3 \(\displaystyle \L\\\lim_{h\to\0}\frac{f(x+h)-f(x)}{h}\) \(\displaystyle \L\\\lim_{h\to\0}\frac{(-2(x+h)-7)-(-2x-7)}{h}\) Now, simplify and find the limit. It is rather obvious once you simplify.
\(\displaystyle \L\\\lim_{h\to\0}\frac{f(x+h)-f(x)}{h}\) \(\displaystyle \L\\\lim_{h\to\0}\frac{(-2(x+h)-7)-(-2x-7)}{h}\) Now, simplify and find the limit. It is rather obvious once you simplify.
stapel Super Moderator Staff member Joined Feb 4, 2004 Messages 16,582 Oct 28, 2007 #4 galactus said: Now, simplify and find the limit. Click to expand... Actually, as posted, the exercise doesn't ask for the limit. This is neither trig nor calculus; it's just algebra. :shock: Eliz.
galactus said: Now, simplify and find the limit. Click to expand... Actually, as posted, the exercise doesn't ask for the limit. This is neither trig nor calculus; it's just algebra. :shock: Eliz.
