document.write( "Question 1171764: y1 =2cos(x)
\n" ); document.write( "(i)Constructive interference(y1 + y2 = 2y1)
\n" ); document.write( "(ii)destructive interference(y1 + y2 = 0)
\n" ); document.write( "(iii) creates beats(y1 + y2 ,k1 ≠ k2) \n" ); document.write( "

Algebra.Com's Answer #850844 by ikleyn(52879) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "(i)   Take y2 = 2cos(x)   (the same as y1)\r\n" );
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document.write( "(ii) Take y2 = -2cos(x)   (opposite to y1)\r\n" );
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document.write( "(iii)  Regarding k1, k2, I do not understand their meaning,\r\n" );
document.write( "since they are not defined in the post - and, therefore, can not answer.\r\n" );
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\n" ); document.write( "\n" ); document.write( "In part (iii), your post does not look like as a Math problem.\r
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\n" ); document.write( "\n" ); document.write( "In whole, the problem in (i) and in (ii) is as if you want to ask, \r
\n" ); document.write( "\n" ); document.write( "how many is 1 + 1, or how many is 1 - 1, dressing it up in different smart words.\r
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