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Question

The number of points of intersection of two curves y=2sinx and y=5x2+2x+3 is

A
0
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B
1
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C
2
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D
infinitely many
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Solution

The correct option is A 0
Number of points of intersection of curves y=f(x)=2sinx and y=g(x)=5x2+2x+3 is same as the number of solutions of f(x)=g(x)
2sinx=5x2+2x+3
L.H.S. 2 and
R.H.S. (460)20
R.H.S. 5620
R.H.S. 2.8
So, there is no solution

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