I don't even know where to start on these... please show steps so I can try to learn this stuff... 1. ∫ x ²(x ³+3)^9 dx 2. ∫ x ------- *dx (x ² +7)^5 3. sec(x)^15 tan(x) dx Thank you so much!
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2 came out wrong, its: x / (x^2 + 7)^5
1. . Use substitution, . So and resubstituting back in, 2. . Substitute . 3. . Substitute .
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