WILL GIVE BRAINLIEST PLS HELP 4. Identify the vertex, focus, and directrix.

Y=1/12x^2

O vertex (0, 0); focus (3, 0); directrix åt y = 3
O vertex (0, 0); focus (3, 0); directrix at y = -3
O vertex (0, 0); focus (0, 3); directrix at y = 3
O vertex (0, 0); focus (0,3); directrix at y = -3

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

What is the solution set of the quadratic inequality x2- 5< 0? o {xl-55x55{x- 155x55){xl -55x5 15){x1 - 15 sx5/5)