Mister Exam

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-X6+X1+X2=0; -X1-X3+X6=0; -X4+X5+X6=0; -30X1+70X3+30X2=30; -30X4+50X5-70X3=-30; -30X2-50X5-20X6=-100
x+y+a+b=350; a+2b+3x+4y=513; a+4b+9x+16y=1097; a+8b+27x+64y=3243
x+y=28,9; 17,2y-0,66x=186,52
(4*u+7*v)/2*v; (u-5*v)/v=6
Identical expressions
sin(pi*x/ fourteen)= zero ; sin(pi*x/(twenty-three / two))= zero
sinus of ( Pi multiply by x divide by 14) equally 0; sinus of ( Pi multiply by x divide by (23 divide by 2)) equally 0
sinus of ( Pi multiply by x divide by fourteen) equally zero ; sinus of ( Pi multiply by x divide by (twenty minus three divide by two)) equally zero
sin(pix/14)=0; sin(pix/(23/2))=0
sinpix/14=0; sinpix/23/2=0
sin(pi*x/14)=O; sin(pi*x/(23/2))=O
sin(pi*x divide by 14)=0; sin(pi*x divide by (23 divide by 2))=0

sin(pix/14)=0; sin(pix/(23/2))=0

You have entered [src]

   /pi*x\    
sin|----| = 0
   \ 14 /

$$\sin{\left(\frac{\pi x}{14} \right)} = 0$$

   /pi*x\    
sin|----| = 0
   \23/2/

$$\sin{\left(\frac{\pi x}{\frac{23}{2}} \right)} = 0$$

sin((pi*x)/(23/2)) = 0

Rapid solution

$$x_{1} = 0$$
=
$$0$$
=

Numerical answer [src]

x1 = 2.143497877512614e-38

x2 = 1.978162977091307e-31

x3 = -2.143497877512614e-38

x4 = -1.978162977091307e-31

x4 = -1.978162977091307e-31

sin(pi*x/14)=0; sin(pi*x/(23/2))=0