f(x)=x², x=3, x=4, y=0 S-?
S=₃∫⁴(x²-0)dx=₃∫⁴x²dx=x³/3 ₃|⁴=(4³/3)-(3³/3)=(64/3)-3²=21¹/₃-9=12¹/₃≈12,33.
ответ: S≈12,33.
f(x)=x², x=3, x=4, y=0 S-?
S=₃∫⁴(x²-0)dx=₃∫⁴x²dx=x³/3 ₃|⁴=(4³/3)-(3³/3)=(64/3)-3²=21¹/₃-9=12¹/₃≈12,33.
ответ: S≈12,33.