Question

can any1 help me, question posted in comments

Answer 1

f(x) = sin^4(x+pi/6) + cos^4 (x+pi/6) is

a) not a periodic fn
b) a periodic fn with period 2pi
c) a periodic fn with period pi
d) a periodic fn with period pi/2

2. For the hyperbola
9x^2-16y^2-18x+32y-151=0

a) one of the directrix is x =21/5
b) length of latus rectum = 9/2
c) focii are (6,1) & (-4,1)
d) ecentricity is 5/4

Answer 2

good kush