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cd246
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Homework Statement
find the equation for the tangent line.
1. (e^x)(cos x) where x=0
Homework Equations
plugged 0 into the equation, (e^0)(cos 0) and got 1 for the y-coordinate. so I got the points(0,1). For the slope, I derived the equation into -(e^x)(sin x). then i plugged 0 in and got 0 for the slope.
I used point-slope form, y-1=0(x-0)
The Attempt at a Solution
y-1=0(x-0) or y=1.
but the answer says x-y+1=0
I believe the slope was suppose to be 1 and I got 0, what is the right way to get the slope?
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