Simplification During Integration

*To*: mathgroup at smc.vnet.net*Subject*: [mg21391] Simplification During Integration*From*: Joel Storch <jstorch at earthlink.net>*Date*: Mon, 3 Jan 2000 03:12:24 -0500 (EST)*Organization*: EarthLink Network, Inc.*Sender*: owner-wri-mathgroup at wolfram.com

In performing a definite or indefinite integral, Mathematica performs transformations on parameters which are not dependent upon the variable of integration. How do I supress this type of behavior ? Example: Consider the two term expression y=Tan[g]^2 Sin[g]^3 Cos[t]^2 + Tan[g]^3 Sin[g]^2 Sin[t]^2 Integrate[y,{t,0,a}] results in an expression in which the trigonometric functions of g have been transformed. I would expect Mathematica to recognize that these factors are independent of t and simply "pull them out" from the integral. Integrating either of the terms separately, does not result in these type of transformations.