private void button30_Click(object sender, EventArgs e)
{
if (chuoi1 != null)
{
chuoi1 = ToanHoc.canbac(double.Parse(chuoi1), 3).ToString();
}
hienthi();
}
private void button31_Click(object sender, EventArgs e)
{
if (chuoi1 != null)
{
chuoi1 = ToanHoc.binhphuong(10, double.Parse(chuoi1)).ToString();
}
hienthi();
}
private void button_n_factorial_Click(object sender, EventArgs e)
{
if (chuoi1 != null)
{
chuoi1 = ToanHoc.giaithua(int.Parse(chuoi1)).ToString();
}
hienthi();
}
private void button_pi_Click(object sender, EventArgs e)
{
chuoi1 = ToanHoc.pi().ToString();
hienthi();
kiemtra = true;
}
