Find an equation of the tangent line to the curve
at the point corresponding to the given value of
the parameter
1.x=(t^4)+1 y=(t^3)+t t=-1
2.x=e^(t^1/2) y=t-t^2 t=1
這兩題困擾我很久了Q_Q
雖然知道要用Chain Rule (大概吧？)
可是就是想不出來Q_Q
拜託各位教教我
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