I am trying to solve the potential barrier problem numerically in Mathematica(adsbygoogle = window.adsbygoogle || []).push({});

I am giving the following command but it is showing error which i could not figure out

a = 2;

s = NDSolve[{y1''[x] + k1*y1[x] == 0, y2''[x] + k2*y2[x] == 0,

y3''[x] + k1*y3[x] == 0}, {y1[0] == y2[0], y2[a] == y3[a],

y1'[0] == y2'[0], y2'[a] == y3'[a]}, {y1, y2, y3}, {x, -a, 2*a}]

Or is there any other way to do this numerically in mathematica

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# Problem with numerical solution to Sch eq in Mathematica

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