Do not know what to do for the following:

Find and simplify

f(a+h) - f(a)

for each function

f(x) = 4 - x^2

f(x) = x^2 +1

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- August 24th 2006, 08:16 PMtstaskalCalculus HELP!
Do not know what to do for the following:

Find and simplify

f(a+h) - f(a)

for each function

f(x) = 4 - x^2

f(x) = x^2 +1 - August 24th 2006, 08:37 PMSoroban
Hello, tstaskal!

Do you understand functional notation*at all*?

Given a function means "replace each with ."

Quote:

Do not know what to do for the following:

Find and simplify for each function:

We are asked to find; .

Try to "read" what is says:

. . (a) Find . . . replace with .

. . (b) Then find . . . replace with .

. . (c) Then subtract them: .

. .

. .

. .

Answer: .

You see? . . . It's just basic Algebra . . .