Suppose f(2)=3 and f (2)=4. Write an equation for the tangent line to f at x=2. Show your working. Thank you?

Suppose f(x)=x^2, then f (x)=2x. Write an equation for the tangent line to f at x=3. Show your working.

Suppose f(x)=2e^3x. Find an equation for the tangent line to f at f=0 Show your working.
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