The equation of the tangent to curve \[y=b{{e}^{-x/a}}\] at the point where it crosses y-axis is [Karnataka CET 2002]

The equation of the tangent to curve \[y=b{{e}^{-x/a}}\] at the point

1.	The equation of the tangent to curve \[y=b{{e}^{-x/a}}\] at the point where it crosses y-axis is [Karnataka CET 2002]
A.	\[ax+by=1\]
B.	\[ax-by=1\]
C.	\[\frac{x}{a}-\frac{y}{b}=1\]
D.	\[\frac{x}{a}+\frac{y}{b}=1\]
Answer» E.

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The equation of the tangent to curve \[y=b{{e}^{-x/a}}\] at the point where it crosses y-axis is [Karnataka CET 2002]

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