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The equation of the tangent to the curve...

The equation of the tangent to the curve `y = be^(-x//a)` at the point where it crosses the y-axis is a)`(x)/(a)-(y)/(b) =1 ` b)ax + by = 1 c)ax - by = 1 d)`(x)/(a) + (y)/(b) = 1`

A

`(x)/(a)-(y)/(b) = 1`

B

ax + by = 1

C

ax - by = 1

D

`(x)/(a) + (y)/(b) = 1`

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The correct Answer is:
D
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