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What geologic features are associated with each type of convergent boundary? I'm trying to find a way to get my grades up in maths and I don't know how to focus on just studying does anyone know how to help? Discuss briefly the recruitment process? How can we differentiate between alcohol and ether by chemical tests? Please help me with this math problem :) If f(g(x)) = g(f(x)) = x, and g(x) = 2 + ln(x+1), find f(4).?