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Number of roots of the equation 4cos(e^x)=2^x+2^-x is A)0. B)1. C)2. D) infinite

Number of roots of the equation 4cos(e^x)=2^x+2^-x is
A)0.      B)1.  C)2.    D) infinite

Grade:12

1 Answers

Kumar
37 Points
4 years ago
Draw the graph of this function and it is cut the x-axis infinite times so that the roots are infinite.
 

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