# Thread to share Good Questions from Calculus which requires deep thinking

#223

Ok. I think I did it.... But calculation is tedious... Is there any shorter approach? @Naman

#224

Any good source to learn Feynman trick?

#225

Blackpenredpen

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#226
1 Like
#227

Answer

-2/sin(alpha) [cos(alpha+cot(x)sin(alpha)^1/2]

Right?

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#228

It's simple. Expand sin(x+@)... Then take out sin^4x... Put cotx=z

#229

it is a question of RD sharma

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#232

I thought it was infinity written there

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#233
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#234
#235

\dfrac{\pi}{8} ln(2)
x=tan@ then convert to f(a+b-x) , add both, bam ! Done
Maybe also possible by feynman trick

#236
#237

How to do this through Feynman trick?

#238

Oh my school teacher gave this Question,
I was only able to solve this

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#239

Try Question 1.

#240

@Gajraj_Singh Is the answer integer type?
Coz i am getting weird answer. Smthng smthng in roots.
4/3(4√3-5)

#241
#242

Ohh just 1 digit chngeee
Got it @Gajraj_Singh mistake
Im feeling sleepy somewhere took 2 to 3 and solved fully. And just saw i wrote it wrong.
Btw nice question.

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#243

Please send solution bro.

#244

Will send tomorrow morning i just did very roughly. Plus am feeling very sleepy. Will ttach neat tomorrow.

2 Likes