Find ∫xe (1 + x^2) dx.

CBSE Class 12 Sample Paper for 2020 Boards
CBSE Class 12 Sample Paper for 2020 Boards
Last updated at Dec. 16, 2024 by Teachoo
Transcript
Question 19 Find ∫1 xe(1 + x2) dx. ∫1 xe(1 + x2) dx. Let t = 1 + x2 dt = 2x dx 𝑑𝑡/2 = x dx Putting value of t and dt in equation ∫ 𝑥𝑒^((1 + 𝑥^2)) 𝑑𝑥 = ∫1 𝑒^𝑡 𝑑𝑡/2 = 1/2 ∫1 𝑒^𝑡 𝑑𝑡 = 1/2 𝑒^𝑡+𝐶 Putting back t = (1 + x2) = 𝟏/𝟐 𝒆^((𝟏 + 𝒙^𝟐))+𝑪