∫（-π/2到π/2）（cos^2x+8）dx∫（-4到0）|x+3|dx

∫（-π/2到π/2）（cos^2x+8）dx∫（-4到0）|x+3|dx


∫（-π/2→π/2）（cos²；2x + 8）dx
=∫（0→π/2）（1 + cos4x）dx + 8∫（-π/2→π/2）dx
=（x + 1/4*sin4x）|（0→π/2）+ 8π
=π/2 + 8π
= 17π/2
_______________________
x + 3 = 0，x∈[-4,0]
=> x = -3
x∈[-4，-3]，x + 3 < 0
x∈[-3,0]，x + 3 > 0
∫（-4→0）|x + 3| dx
=∫（-4→-3）-（x + 3）dx +∫（-3→0）（x + 3）dx
= 1/2 + 9/2
= 5

Elden Ring Premiere

RELATED INFORMATIONS