Question

wyznacz ze wzorów wskazana wielkosc c) s = ar(x + r); x b) r = a+b+c/2r; a

Answer 1

c) s = ar(x + r); x

s=arx+ar²

s-ar²=arx /:ar

s-ar² / ar = x

x = s-ar² / ar

 

 

b) r = a+b+c/2r; a

r = a+b+c/2r  /*2r

2r²=a+b+c

2r²-b-c = a

a = 2r²-b-c