a_1 x_1 (t) + a_2 x_2 (t) \Leftrightarrow a_1 X_1 (s) + a_2 X_2 (s)
% MathType!MTEF!2!1!+- % feaafaart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVCI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfeaY-biLkVcLq-JHqpepeea0-as0Fb9pgeaYRXxe9vr0-vr % 0-vqpWqaaeaabiGaciaacaqabeaadaqaaqaaaOqaaiaadggadaWgaa % WcbaGaaGymaaqabaGccaWG4bWaaSbaaSqaaiaaigdaaeqaaOGaaiik % aiaadshacaGGPaGaey4kaSIaamyyamaaBaaaleaacaaIYaaabeaaki % aadIhadaWgaaWcbaGaaGOmaaqabaGccaGGOaGaamiDaiaacMcacqGH % uhY2caWGHbWaaSbaaSqaaiaaigdaaeqaaOGaamiwamaaBaaaleaaca % aIXaaabeaakiaacIcacaWGZbGaaiykaiabgUcaRiaadggadaWgaaWc % baGaaGOmaaqabaGccaWGybWaaSbaaSqaaiaaikdaaeqaaOGaaiikai % aadohacaGGPaaaaa!521E!
Pasting the above "text" into MathType 5.0 will enter the above equation and make it possible to edit, save, and use in applications such as MS Word.
