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Question

The tangent to the curve y=e2x at the point (0,1) meets x-axis at?

A
(0,1)
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B
(12,0)
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C
(2,0)
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D
(0,2)
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Solution

The correct option is C (2,0)
solution - equation of curve is y=e2x
tangent to the curve is
dydx=2e2x
(dexdx=ex)
At points (0,1), the tangent is
(dydx)(0,1)=2e2(0)
(dydx)(0,1)=2e0 [e0=1]
dydx0,1=2
when the slope is 2, and solve the tangent
meets y axis the coordinate is 0,
Hence the tangent meets the x axis at (2,0)

1176120_1294135_ans_11a7c6cc3b38459bb3209773aa2a4a3f.jpg

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