tiny.cc[slash]cTtCg

I do not understand, sorry.

Neither do I.

http://img407.imageshack.us/img407/5223/picture1cd2.png

You are suppose to find the resultant of those waveforms.

See http://books.google.com/books?id=OwdAkGQ3AZYC&pg=PA434&lpg=PA434&dq=resultant+waveform+interference&source=web&ots=snTO1OBhT2&sig=HbGpI3LC_f4NsQYS1TEi5qqwhvw&hl=en&sa=X&oi=book_result&resnum=10&ct=result#PPA435,M1

The idea is to add the amplitudes of each wave to get the resultant at any point.

It seems like you provided a link in the format of "tiny.cc/cTtCg". This format suggests that it is a shortened URL, likely created using a URL shortening service.

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