Question

rezolva ex 5 dau coroana​

Answer 1

Explicație pas cu pas:

a=(1+1/2)(1+1/3)(1+1/4)

a=[(2+1)/2][(3+1)/3][(4+1)/4]

a=(3/2)(4/3)(5/4)

a=(3*4*5)/(2*3*4)

a=5/2

b=(1-1/2)(1-1/3)(1-1/4)

b=[(2-1)/2][(3-1)/3][(4-1)/4]

b=(1/2)(2/3)(3/4)

b=(1*2*3)/(2*3*4)

b=1/4

a/b=(5/2)/(1/4)

a/b=(5/2)*4=20/2=10