Explications étape par étape:
h(x)=(7/2)x
x=-2
h(-2) = (7/2)×(-2)=-14/2= -7
h(x)=14
14=(7/2)x
x= 14 ÷ 7/2
x=14×2/7
x=28/7
x=4
h(x)=(7/2)pi
(7/2)pi = (7/2)x
x = ((7/2)pi) ÷ (7/2)
x = pi
h(x)=14pi
14pi= (7/2)x
x= 14pi ÷7/2
x=14pi×2/7
x= 28/7pi
x=4pi
x=14
h(14)=(7/2)×14
= 98/2
= 49
x=2/7
h(2/7)=(7/2)×(2/7)=14/14=1