P3 Logs & Linear Law Part 4 | Linear Law | A-level Math 9709 | IGCSE/O-level Add Math

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QUICK REVISION OF P3 CONCEPTS:

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00:01 Linear Law - Understanding linear functions and quadratic functions
02:58 Changing the axis to y and x² results in a straight line graph.
05:22 Changing the x-axis to x^2 represents a quadratic function as a straight line.
07:51 Converting exponential equations to linear form
10:46 The equation can be rearranged into the form Ln y = X Ln 5 + Ln 2
13:16 The gradient of the line is Ln of 5 and the vertical intercept is Ln of 2.
15:53 Ln y against Ln X is a straight line
18:29 The equation y = 3Ln(X) + Ln(4) represents a straight line.
20:39 Finding the equation of a straight line given the values of X and Y.
22:48 The gradient of the line is 2/3.
25:10 The value of a is 4.48.
27:28 Discussion on exponential and log graphs

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