Question

Hitunglah hasil dari (2/3x)^2 . (3/4) . (-y)^3/xy^2 untuk x = 1/2 dan y = 1/3
Tolong jelaskan

Answer 1

Yang (2/3x)^2 itu maksudnya  {2/(3x)}^2 atau { (2/3 . x)^2
jika 2/3x itu (2/3  x)  ini  caranya
=4/9 . x^2 . 3/4 . - (y^3)/ x , y^2
=  -  (4/9)(3/4) (x^2. y^3)/(x. y^2)
= - ( 3/9) (x.y)
= (-1/3) (1/2)(1/3)
= - 1/18
.
jika 2/3x itu  (2/(3x)) maka
= (4/9) x^-2 . 3/4 . -(y^3) / (x.y^2)
= - 1/3 , y^3 / (x^3/ y^2)
= -1/3 y/(x^2)
=  -1/3 (1/3) / (1/4)
= - 1/9 x 4 = - 4/9