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1: x sin(pi x) 1: sin(pi x) / pi^2 - x cos(pi x) / pi . . ' x sin(pi x) RET m r a i x RET
1: [y, 1] 2: sin(pi x) / pi^2 - x cos(pi x) / pi . ' [y,1] RET TAB
1: [sin(pi y) / pi^2 - y cos(pi y) / pi, 1 / pi]
.
V M $ RET
1: sin(pi y) / pi^2 - y cos(pi y) / pi - 1 / pi . V R -
1: sin(3.14159 y) / 9.8696 - y cos(3.14159 y) / 3.14159 - 0.3183 . =
1: [0., -0.95493, 0.63662, -1.5915, 1.2732] . v x 5 RET TAB V M $ RET