Integral de Sen x

¿ Cuál es la Integral de Sen x ?

La integral de sen x es -cos x+c.

$\int sinxdx=-cosx+c$

Encontrar la Integral de Sen x

$\int sinxdx=?$

$sinx=u$

$d(sinx)=d(u)$

$d[f(x)]=f^{\prime }(x)dx$

$(sinx{)}^{\prime }dx=du$

$(sinx{)}^{\prime }=cosx$

$cosxdx=du$

$dx=\frac{du}{cosx}$

$sinx=u$

$cosx=\sqrt{1-u^2}$

$dx=\frac{du}{\sqrt{1-u^2}}$

$\int sinxdx=\int u\frac{du}{\sqrt{1-u^2}}$

$\int sinxdx=\int \frac{udu}{\sqrt{1-u^2}}$

$\sqrt{1-u^2}=v$

$(\sqrt{1-u^2}{)}^2=v^2$

$\sqrt{(1-u^2{)}^2}=v^2$

$1-u^2=v^2$

$d(1-u^2)=d(v^2)$

$(1-u^2{)}^{\prime }du=(v^2{)}^{\prime }dv$

$-\cancel{2}udu=\cancel{2}vdv$

$-udu=vdv$

$udu=-vdv$

$\int sinxdx=\int \frac{-\cancel{v}dv}{\cancel{v}}$

$\int sinxdx=\int -dv$

$\int sinxdx=-v+c$

$\int sinxdx=-\sqrt{1-u^2}+c$

$\int sinxdx=-cosx+c$

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