Seumas9307
20.02.2020 •
Mathematics
Find the standard form of the equation of the parabola with a vertex at the origin and a focus at (0, -4).
y = negative one divided by fourx2
y2 = -4x
y2 = -16x
y = negative one divided by sixteenx2
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Ответ:
This being in the form of the explicit rule for an arithmetic sequence you can pick out the d and a1.
an = a1 + (n - 1)(d)
d = 7
a1 = -4