Here’s a system of equations that will spell “Screw This” on a graphing calculator.

x=cos(y)+5 {3pi<=y<=6pi}

x=(y-12)^2+8 {x<=12}

x=2^(y-13)+13 {10<=y<=15}

x=-3|sin(y)|+20 {3pi<=y<=5pi}

y=-3|cos(x)|+13 {13pi/2<=x<=17pi/2}

x=6 {1<=y<=7}

y=7 {3<=x<=9}

x=10 {1<=y<=7}

y=-(x-12)^2+5 {y>=1}

x=15 {5>=y>=1, 7>=y>=6}

x=cos(2y)+18 {2pi>=y>=pi/2}

augmented coefficient matrix

Gaus-jordan method

AC--> REF-->RREF

^tell difference between 3 and how to go between them using different methods

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elementary row ops

Work V

reduced row echelon form

Tricks

Strategy

Application Problem