Integrate {(secx tanx ) / (3secx +5)} dx.
Answer: Given that \(\begin{array}{l}\int \frac{3sec \left(x\right)\tan \left(x\right)}{3sec \left(x\right)+5}dx\end{array} \) Let us consider t = 3 sec x + 5 Differentiate... View Article
Answer: Given that \(\begin{array}{l}\int \frac{3sec \left(x\right)\tan \left(x\right)}{3sec \left(x\right)+5}dx\end{array} \) Let us consider t = 3 sec x + 5 Differentiate... View Article
Let us solve the given equation, LHS and RHS separately ∫(sin 2x – cos 2x) dx = 1/√2(sin(2x – a)... View Article
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\(\begin{array}{l}\int_{0}^{\frac{\pi}{2}}\frac{sinx – cosx}{1 + sinx , cosx} = I\end{array} \) On changing x=\(\begin{array}{l}\frac\{pi }{2}-x\end{array} \), \(\begin{array}{l}\int_{0}^{\frac{\pi}{2}}\frac{cosx – sinx}{1 + sinx... View Article
Let I= \(\begin{array}{l}\int(\frac{1}{1+ \cot x})dx\end{array} \) We will solve the equation by substitution method. In this method of integration by substitution, any... View Article
\(\begin{array}{l}I=\int \frac{sinx}{2+sin2x}dx\end{array} \) ⇒ \(\begin{array}{l}\frac{1}{2}\int \frac{sinx+cosx+sinx-cosx}{2+sin2x}dx\end{array} \) ⇒ \(\begin{array}{l}\frac{1}{2}\left [\frac{sinx+cosx}{3-[sinx-cosx]^2} \right ]+\frac{1}{2}\left [\frac{sinx+cosx}{1+[sinx+cosx]^2} \right ]\end{array} \) Now put sinx – cosx =... View Article
The given equation is \(\begin{array}{l} \int \frac{x-\sin x}{1-\cos x} dx[\latex] Solution \(\begin{array}{l} \int \frac{x-\sin x}{1-\cos x}[\latex] On using double angle formula for sin... View Article
Answer: \(\begin{array}{l}\int \frac{x\ln \left(x\right)}{\left(1+x^2\right)^2}dx\end{array} \). \(\begin{array}{l}\frac{x\ln \left(x\right)}{\left(1+x^2\right)^2}=\left(x\ln \left(x\right)\right)\frac{1}{\left(1+x^2\right)^2}\end{array} \). \(\begin{array}{l}=\int x\ln \left(x\right)\frac{1}{\left(1+x^2\right)^2}dx\end{array} \). Apply Integration By Parts \(\begin{array}{l}u=\ln \left(x\right),:v’=\frac{1}{\left(1+x^2\right)^2}x\end{array} \).... View Article
cos20 cos40 cos80 multiply and divide by 2 1/2 (2 cos20 cos40 cos80) 1/2 (cos(20+80)+ cos(20-80)) cos40 (2cosa cosb= cos(a+b)... View Article
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Proof Consider the LHS (sec 8A -1) / (sec 4A -1) => [(1 – cos 8A)/ cos 8A] / [(1... View Article
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Given that LHS = [tanA/secA+1] + [cotaA/cosecA+1] = tan A(sec.A — 1)/(sec A+1)(sec A—1) + cot.A(cosec.A — 1)/(cosec A+1)(cosecA —... View Article
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