During this course 2011 - 2012 MATHEMATICS is being taught for 4º ESO.

16 / 3 / 12 EQUATIONS AND STRAIGHT LINES


TO KNOW MORE ABOUT EQUATIONS SYSTEMS AND ITS APLICATIONS , LET´S HAVE A LOOK AT THIS GEOGEBRA EXERCISE AND MOVE THE BUTTONS:



7 / 3 / 12 GRAPHING LINEAR EQUATIONS IN TWO VARIABLES

In order to learn how to draw linear equations in two variables:


21 / 2 / 12 STUDENTS' EXERCISES

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These are some of your exercises using a spreadsheet program:

Change the values for a, b and c in the quadratic equation ax2+bx+c=0. 
You´ll see the real solutions for x, straightaway.

quadratic equation solver (mmp)  (by Marcos M.P.)

quadratic equation solver (ngm)  (by Nicolás G.M.)

QUADRATICS  (by Aida F. B. and Imanol G. A.)
CONGRATULATIONS!

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21 / 2 / 12 EQUATIONS AND LOGARITHMS

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logx logx logx logx logx logx logx logx logx logx logx logx logx logx logx logx logx logx logx logxlogx logx logx logx logx logx

Our next step will be to include logarithms and trigonometric functions in our very well known one-variable equations.
Can you solve this equation?
log(x+21)+logx=2

If you need help, you can vist these links:

lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx lnx
llnlllllllll
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