The local linear approximation of a function f will always be less than or equal to the function's value if, for all x in an interval containing the point of tangency, a) f'(x) < 0 b) f'(x) > 0 c) f"(x) < 0 d) f"(x) > 0 yo

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

What is the quadric regression equation that fits these data

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis