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Hi, Im having a little bit of trouble with the following:

[tex]\int sintsec^2(cost)dt[/tex]

heres what I have so far

[tex]u=cost[/tex]

[tex]du=-sintdt[/tex]

[tex]-\int sec^2(u)du[/tex]

[tex]-2tan(u) + C[/tex]

is this right?

[tex]\int sintsec^2(cost)dt[/tex]

heres what I have so far

[tex]u=cost[/tex]

[tex]du=-sintdt[/tex]

[tex]-\int sec^2(u)du[/tex]

[tex]-2tan(u) + C[/tex]

is this right?

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