(a)
Substitute <em>x</em> = 3 tan(<em>t</em> ) and d<em>x</em> = 3 sec²(<em>t </em>) d<em>t</em> :
(b) The series
converges by comparison to the convergent <em>p</em>-series,
(c) The series
converges absolutely, since
That is, ∑ (-1)ⁿ (<em>n</em> ² + 9)/<em>e</em>ⁿ converges absolutely because ∑ |(-1)ⁿ (<em>n</em> ² + 9)/<em>e</em>ⁿ| = ∑ (<em>n</em> ² + 9)/<em>e</em>ⁿ in turn converges by comparison to a geometric series.
This can be written y-7=-2(x-5)² which is standard form for a parabola of vertex (5,7).
The coefficient is -2 and minus means the parabola is inverted like an upside-down U (that is, ∩) so it opens downwards.
The vertex is a maximum point.
Answer:
13n+20
Step-by-step explanation:
If 20 is the flat rate, then you dont put x to it. X is how many books you are going to get and 13 is how much you have to pay for each book. If that makes sense.
Brainliest?
Answer:
34.6%
Step-by-step explanation:
the decimal goes two places to the left