Biết \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaamaapeaabaGaam % OzamaabmaabaGaamiEaaGaayjkaiaawMcaaiaabsgacaWG4baaleqa % beqdcqGHRiI8aOGaeyypa0JaeyOeI0IaamiEamaaCaaaleqabaGaaG % OmaaaakiabgUcaRiaaikdacaWG4bGaey4kaSIaam4qaaaa!456A! \int {f\left( x \right){\rm{d}}x} = - {x^2} + 2x + C\). Tính \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaamaapeaabaGaam % OzamaabmaabaGaeyOeI0IaamiEaaGaayjkaiaawMcaaiaabsgacaWG % 4baaleqabeqdcqGHRiI8aaaa!3E25! \int {f\left( { - x} \right){\rm{d}}x} \).

\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaaiaadAgadaqada % qaaiaadIhaaiaawIcacaGLPaaacqGH9aqpdaqadaqaaiabgkHiTiaa % dIhadaahaaWcbeqaaiaaikdaaaGccqGHRaWkcaaIYaGaamiEaiabgU % caRiaadoeaaiaawIcacaGLPaaadaahaaWcbeqaaOGamai4gkdiIcaa % cqGH9aqpcqGHsislcaaIYaGaamiEaiabgUcaRiaaikdaaaa!4B73! f\left( x \right) = {\left( { - {x^2} + 2x + C} \right)^\prime } = - 2x + 2\)\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaaiabgkDiElaadA % gadaqadaqaaiabgkHiTiaadIhaaiaawIcacaGLPaaacqGH9aqpcqGH % sislcaaIYaWaaeWaaeaacqGHsislcaWG4baacaGLOaGaayzkaaGaey % 4kaSIaaGOmaiabg2da9iaaikdacaWG4bGaey4kaSIaaGOmaaaa!48C0! \Rightarrow f\left( { - x} \right) = - 2\left( { - x} \right) + 2 = 2x + 2\)

\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaaiabgkDiEpaape % aabaGaamOzamaabmaabaGaeyOeI0IaamiEaaGaayjkaiaawMcaaiaa % bsgacaWG4baaleqabeqdcqGHRiI8aaaa!4082! \Rightarrow \int {f\left( { - x} \right){\rm{d}}x} \)\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaaiabg2da9maape % aabaWaaeWaaeaacaaIYaGaamiEaiabgUcaRiaaikdaaiaawIcacaGL % PaaacaqGKbGaamiEaaWcbeqab0Gaey4kIipaaaa!3FAD! = \int {\left( {2x + 2} \right){\rm{d}}x} \)\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaaiabg2da9iaadI % hadaahaaWcbeqaaiaaikdaaaGccqGHRaWkcaaIYaGaamiEaiabgUca % Riqadoeagaqbaaaa!3D2F! = {x^2} + 2x + C'\)