Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Using Formulaes
Last updated at May 29, 2023 by Teachoo
Example 1 Write an anti derivative for each of the following functions using the method of inspection: (i) cos2𝑥 We know that (𝑠𝑖𝑛 𝑥)^′=𝑐𝑜𝑠 𝑥 (𝒔𝒊𝒏 𝟐𝒙)^′=𝒄𝒐𝒔 𝟐𝒙 × 2 (𝑠𝑖𝑛 2𝑥)^′=2𝑐𝑜𝑠 2𝑥 (𝑠𝑖𝑛 2𝑥)^′/2=𝑐𝑜𝑠 2𝑥 ∴ Anti Derivative of (cos 2x) is 𝟏/𝟐 (𝒔𝒊𝒏 𝟐𝒙)