mlclass-ex5 ...........\ex5data1.mat ...........\validationCurve.m ...........\ex5.m ...........\polyFeatures.m ...........\linearRegCostFunction.m ...........\learningCurve.m ...........\trainLinearReg.m ...........\ex5.pdf ...........\featureNormalize.m ...........\submitWeb.m ...........\submit.m ...........\fmincg.m ...........\plotFit.m