In a group of 20 students, there are 7 boys.
2 answers:
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Answer:
There is a horizontal tangent at (0,-4)
The tangent is vertical at (-2,-3) and (2,-3).
Step-by-step explanation:
The given function is defined parametrically by the equations:
and
The tangent function is given by:
The tangent is vertical at when
When t=1,
and
When t=-1,
and
The tangent is vertical at (-2,-3) and (2,-3).
The tangent is horizontal, when or
When t=0,
and
There is a horizontal tangent at (0,-4)
