expm1intermediate// e^x minus 1, precise for very small x
Math.expm1(0) // β 0
Math.expm1(0.001) // β 0.0010005...Use Math.expm1(x) instead of Math.exp(x) - 1 for small x values to avoid floating-point precision loss.
Math.expm1(-1) returns approximately -0.6321 (= 1/e - 1).
Challenge: Compute and verify Math.expm1(-1).