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  • 1 answers

Bantu Mahesh 7 years, 3 months ago

not homogeneous

there is a term independent of  function y

 

  • 2 answers

Sachin Ray 7 years, 4 months ago

Sin…1\2√sin

Soumya Ghoshal 7 years, 4 months ago

x²+y²=(sinA+cosA) ² +(sinA-cosA) ²

          = 2

OR, 

x+y=k sinA, x-y=k cosA 

x²+y²=1/2(k²sin²A + k²cos²A) 

         = 1/2 (k²(sin²A + cos²A)) 

         = 1/2 *k²

          = k²/2

  • 1 answers

Soumya Rai 7 years, 6 months ago

The answer is option A and B

 

  • 2 answers

Bipin Dubey 7 years, 5 months ago

= -5 ( x- 2x) - 1

= -5 (x- 2x + 1 - 1) - 1

= -5 (x - 1)2 + 5 - 1

= 4 - 5 (x - 1)2 

Since ( x - 1 )2 >= 0

-5 (x - 1)2 <= 0

4 - 5 (x - 1)2 <= 4

Payal Singh 7 years, 6 months ago

4

  • 1 answers

Soumya Ghoshal 7 years, 4 months ago

a+b=3  i. e. b=3-a

a ³+b³=7 (Given) 

(a+b) ³-3ab(a+b)=7

Or, 27-9ab=7

Or, ab=20/9

Now, a(3-a)=20/9

Or, 9a²-27a+20=0

Solving by Sreedhar Achrya's formula, 

We get, 

a=5/3 or 4/3

and b=4/3 or 5/3

 

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