IB Calculus Problem 3
Consider a function \(f(x)\). The line \(L_1\) with equation \(y = 3x + 1\) is tangent to the graph of \(f(x)\) at \(x = 2\).
- Write down \(f^\prime(2)\).
- Find \(f(2)\).
Let \(g(x) = f(x^2 + 1)\) and let \(P\) be the point on the graph of \(g\) where \(x = 1\).
- Show that the graph of \(g\) has a slope of 6 at point \(P\).
Let \(L_2\) be the tangent to the graph of \(g\) at point \(P\). \(L_1\) intersects \(L_2\) at point \(Q\).
- Find the y-coordinate of \(Q\).