(Section 1.6: Combining Functions) 1.6.3 fx()=x2yields the bluegraph below; gx=x3yields the redgraph. +=x2+x3yields the browngraph; we add y-coordinates. §Example 2 (Subtracting Functions)Let =4xand =x+1x. Find f±gxand Domf±g. § Solutionf±gx=±=4x±x+1x²³´µ¶·WARNING 2:Use grouping symbols when expanding here. Be careful when subtracting an expression with more than
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