ISSN : 1226-0657
In this paper, we obtain the generalized Hyers-Ulam stability of a Cauchy-Jensen functional equation f(x+y, z)-f(x, z)-f(y, z)=0, <TEX>$$2f\;x,\;{\frac{y+z}{2}}-f(x,\;y)-f(x,\;z)=0$$</TEX> in the spirit of P. <TEX>$G{\breve{a}}vruta$</TEX>.
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