תשובה:
#intr sqrt (3 (1-x ^ 2)) dx = sqrt3 / 4sin2theta + sqrt3 / 2 theta + C #
הסבר:
# x = sintheta, dx = cos theta d theta #
# 3 (1-sin 2 ^theta)) * cos theta d theta = intsqrt (3 (cos ^ 2theta) cos theta d theta #
# = intsqrt3 cos theta cos theta d theta #
# = sqrt 3intcos ^ 2 theta d theta #
# = sqrt3 int1 / 2 (cos2 theta + 1) d theta #
# = sqrt3 / 2 int (cos2 theta + 1) d theta #
# = sqrt3 / 2 1/2 sin2theta + theta #
# = sqrt3 / 4sin2theta + sqrt3 / 2 theta + C #