how can i delete this stuff,…

 

ada yang tahu bagaimana caranya hapus ini tanda,…

itu lho, kotak diantara sigma-sigma di atas.

3 comments

  1. coba ngetiknya pakai latex atau lyx. Hihihi jadi belajar lagi. Itu salah format kali kamu-nya Is. Di antara tanda sigma harusnya gak boleh ada spasi. Bukan begitu?

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