MathCastle
CalculusMediumLimits and Continuity

Limits and Continuity · Medium problem

A signal's strength near x=0x=0 is modeled by x2sin⁡ ⁣(1x)x^2\sin\!\left(\dfrac1x\right), where the sin⁡(1/x)\sin(1/x) factor oscillates unpredictably and faster and faster as x→0x\to0. Does the signal strength settle on a definite value as x→0x\to0, and if so, what is it?