Lim of (1-cos4x)/(1-cos6x)
x approach to 0

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b