1.3.
Private Sub CommandButton1_Click()
Dim x As Single, y As Single
For x = 3 To 4 Step 0.1
y = Cos(x)
MsgBox y
Next
End Sub
1.4.
, ={2;0,1;-4;5,7;-3;11;0,2;8;-6;21}
Private Sub CommandButton1_Click()
Dim a(10) As Single, s As Single
Dim i As Integer
s = 0
For i = 1 To 10
a(i) = Cells(i, 1)
s = s + a(i)
Next
MsgBox s
End Sub