Algebra II on Khan Academy: Your studies in algebra 1 have built a solid foundation from which you can explore linear equations, inequalities, and functions. In algebra 2 we build upon that foundation and not only extend our knowledge of algebra 1, but slowly become capable of tackling the BIG questions of the universe. We’ll again touch on systems of equations, inequalities, and functions…but we’ll also address exponential and logarithmic functions, logarithms, imaginary and complex numbers, conic sections, and matrices. Don’t let these big words intimidate you. We’re on this journey with you!

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14. A tunnel with a parabolic arch is 8m wide. If the height of the arch 1 metre from the outer edge is 3 metres, can a truck that is 6 metres tall and 3 metres wide fit through the tunnel?

Visit http://ilectureonline.com for more math and science lectures! In this video I will explain that a scalars only represent magnitude (it has no direction) and can be negative. And I will show how to execute vector scalar multiplication of multiplying a scalar quantity to a vector quantity. Next video in the series can be seen…

Using the Aesop’s Fable paradigm to investigate causal understanding of water displacement by New Caledonian crows: Example trials for each of the six experiments. For more information: http://dx.plos.org/10.1371/journal.pone.0092895 Jelbert SA, Taylor AH, Cheke LG, Clayton NS, Gray RD (2014) Using the Aesop’s Fable Paradigm to Investigate Causal Understanding of Water Displacement by New Caledonian Crows.…