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    • Posted by Bhavya Chadha 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Amit Kumar 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Santosh Deshmukh 8 years, 2 months ago

    {tex}\begin{array}{l}\int\frac1{\sin x\;+\;\cos x}dx\\putting\rightarrow\;\;\sin x\;=\;\frac{2\tan{\displaystyle\frac x2}}{1+\tan^2{\displaystyle\frac x2}}\;\;and\;\cos x\;=\;\frac{1-\tan^2{\displaystyle\frac x2}}{1+t\mathrm{an}^2\frac x2}\;\\we\;get\;\int\frac{1+\tan^2\frac x2}{1+2\tan{\displaystyle\frac x2}-\tan^2{\displaystyle\frac x2}}dx\;=\;\int\frac{\displaystyle sec^2\frac x2}{\displaystyle1+2\tan\frac x2-\tan^2\frac x2}dx\\let\;\tan\frac x2\;=\;t\;\Rightarrow\;sec^2\frac x2dx\;=\;2dt\\\Rightarrow\;\int\frac{2dt}{1\;+\;2t\;\;-\;t^2}\;\;=\;\int\frac{2dt}{{\displaystyle\left(\sqrt2\right)^2}{\displaystyle-}{\displaystyle{\displaystyle\left(t-1\right)}^2}}\\=\;2\;\log\left|\frac{\displaystyle\sqrt2+t-1}{{\displaystyle\sqrt2}{\displaystyle-}t+1}\right|\;+\;c\;=\;2\;\log\;\left|\frac{\sqrt2{\displaystyle-}{\displaystyle1}{\displaystyle+}{\displaystyle\;}{\displaystyle\tan}{\displaystyle\frac x2}}{\sqrt2{\displaystyle+}1-\;\tan\frac x2}\right|\;+\;c\\\\\end{array}{/tex}

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    • Posted by Anmol Yadav 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Muskan Rajgaria 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Muskan Rajgaria 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Harsh Singh 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Bhat Rayees 8 years, 2 months ago

    0÷0=10 Multiply b/s by 0 0= 10×0 0=0 lhs=rhs

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    • Posted by Saurabh Jain 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Rahul Prajapat 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Harsh Singh 8 years, 2 months ago

    Bro there is no easy way in maths but there is a trick try the elementary operation in your board paper solution as given in your NCERT book using 'A=IA' and built it into last extent if you think that you are wrong at the last stage of elementary operation use the methods of determenent i.e; A inverse is equal to adj(A) Divided by determinent of A and you will get full mark for this question

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    1+2

    • Posted by Ayush Tiwari 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
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    • Posted by Nafeesath Rahiba K 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Divakar Dalapathi 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 2 answers

    Roshan Raj 8 years, 2 months ago

    .6990

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    Sanya Chauhan 8 years, 2 months ago

    1/5

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    • Posted by Neelam Mandowara 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Himanshu Kumar 8 years, 2 months ago

    -det.A

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    • Posted by Sanjay Kumar 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Himanshu Kumar 8 years, 2 months ago

    NOTE = question is incomplete OK First of all check it is continuous and defferentiable and then check f(a)=f (b) And then verify it , F'(x)=0

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    • Posted by Sanjay Kumar 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Ankit Singh 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Shahnaj Begum 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
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    • Posted by Shahnaj Begum 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Akash Sahu 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Urvashi Adwani 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Ankit Singh 8 years, 2 months ago

    Take x-y=t then derivate it with respect to t

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    • Posted by Shubhu Bamboriya 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Viksit Singh Padam 8 years, 2 months ago

    Integral xcos(πx) By using product rule it will be X[sin(πx)] ÷π -integral sin(πx) X[sin(πx)] ÷π -[-cos(πx) ÷π] Xsin(πx) ÷π+cos(πx) Its ans. Tnx u

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    • Posted by Rohit Singh 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Gaurav Saxena 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Sahil Sharma 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Aviraj Singh Tomar 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 2 answers

    Sumiti Beniwal 8 years, 2 months ago

    Arihant

    1Thank You

    Rohit Singh 8 years, 2 months ago

    Oswal

    1Thank You

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    • Posted by Trilochan Singha 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Arti Kumari 8 years, 2 months ago

    Directly by using discriminant method

    1Thank You

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    • Posted by Aditya Singh 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Richa Hajowary 8 years, 2 months ago

    -sin x

    3Thank You

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    • Posted by Abhishek Maurya 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Anmol Kumar 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Gautam Arora 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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    • Posted by Akash Maurya 8 years, 2 months ago

    CBSE > Class 12 > Mathematics
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