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Laura describes her adventure as a Physics major at Iowa State University.

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Using Gauss-Jordan elimination to invert a 3×3 matrix. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/precalculus/precalc-matrices/inverting_matrices/e/matrix_inverse_3x3?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Watch the next lesson: https://www.khanacademy.org/math/precalculus/precalc-matrices/inverting_matrices/v/singular-matrices?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Missed the previous lesson? https://www.khanacademy.org/math/precalculus/precalc-matrices/inverting_matrices/v/inverting-matrices-part-2?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Precalculus on Khan Academy: You may think that precalculus is simply the course you take before calculus. You would be right, of course, but that definition doesn’t mean…

#PRINCIPLESOLUTIONANDGENERALSOLUTION IF Sinx=Siny THEN FIND THE PRINCIPAL SOLUTION AND GENERAL SOLUTION Ex. 3.3 FROM Q.1 to Q.16 https://www.youtube.com/watch?v=ibInyb0S1xA https://www.youtube.com/watch? v=ifkDbWoQWHshttps://www.youtube.com/watch?v=fLhIFc_gUBk https://www.youtube.com/watch?v=ZvIN4aET2Ms https://www.youtube.com/watch?v=aadFtaKaJSY https://www.youtube.com/watch?v=wUYZT17TOtM https://www.youtube.com/watch?v=YCQTY5RNoFM https://www.youtube.com/watch?v=4SbTwLlhQKQ https://www.youtube.com/watch?v=11JCTqjXs9s https://www.youtube.com/watch?v=rBRDw_96BQU

A slightly more involved ratio problem with algebra. Created by Sal Khan. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/math/algebra-basics/core-algebra-linear-equations-inequalities/ratios-core-algebra/e/constructing-proportions-to-solve-application-problems?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics Watch the next lesson: https://www.khanacademy.org/math/algebra-basics/core-algebra-linear-equations-inequalities/core-algebra-direct-inverse-variation/v/direct-and-inverse-variation?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics Missed the previous lesson? https://www.khanacademy.org/math/algebra-basics/core-algebra-linear-equations-inequalities/ratios-core-algebra/v/constructing-proportions-to-solve-application-problems?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics Algebra basics on Khan Academy: Topics covered in a traditional college level introductory macroeconomics course About Khan Academy: Khan Academy offers practice exercises, instructional…

Proof of the power rule (where the exponent is any real number, not just positive integers) and an example of using it. Note that the proof requires us to take one small thing for granted for now, but it will be explained in the implicit differentiation video in the next playlist (the applications of derivatives…