1.)
20,4 = 3x |ln
ln(2)*0,4=x*ln(3) |:ln(3)
(ln(2)*0,4)/ln(3)=x
->x= 0,2524
20,4=ey |ln
ln(2)*0,4=y
->y= 0,2773
20,4 =10z |ln
ln(2)*0,4=ln(10)*z |:ln(10)
(ln(2)*0,4)/ln(10)=z
z=0,1204
2.)
ex-1=2x+1 |ln
x-1=ln(2)*(x+1)
x-1=x*ln(2)+ln(2) |-x
-1= x(ln(2)-1)+ln(2) |-ln(2)
-1-ln(2)=x(ln(2)-1) |:(ln(2)-1)
(-1-ln(2))/((ln(2)-1) ) =x
-> X=5,5178