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Grade:

                        

solve for x and y x^2+2xsin(xy)+1 = 0

7 years ago

Answers : (1)

Kaushik Kumar
32 Points
							

x^2+2xsin(xy)+1=0

sin(xy)=-(x+1/x)/2 (a number and its reciprocal always greater that or equal to 2)

therefore sin(xy)=-1

xy=-pie/2 or =3/2*pie.....

infinete solutions...

(-1, pie/2) , (1,-pie/2)......

7 years ago
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