想要求这样的一个公式y=3.14*x*arcsin(150/(300+x))/90。请问大神如何用vb写代码啊~我自己额 写了一点,但是不能运行,求大神指教啊如下Private Sub Command1_Click()Dim r As Single, delta As Single, root1 As Singler = Text1.Textdelta = 150 / (300 + r)If (delta < 0) Then Text2.Text = 0Else root1 = 3.14 * r * Atn((delta) / Sqr(-(delta) * (delta) + 1)) / 90 Text2.Text = root1End IfEnd Sub
提示label2变量未定义,你是怎么运行的呀,请问