Question

which term of the ap. 18,15 1/2,13............-47​

Answer 1

Answer:

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please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please please follow me

1. ️️️️️️️

, जयंत पाटील यांनी सांगितले की नाही हे बघ नातं महत्वच नाही हे बघ नातं महत्वच नाही हे बघ नातं महत्वच नाही हे

Answer 2

Answer:

When axes are rotated through 45

0

,

x=xcosθ−ysinθ=

2

x−y

y=xsinθ−ycosθ=

2

x+y

3x

2

+3y

2

+2xy=2⇒3(

2

x−y

)

2

+3(

2

x+y

)

2

+2(

2

x

2

−y

2

)=2

3(x

2

+y

2

−2xy)+3(x

2

+y

2

+2xy)+2x

2

−2y

2

=4

4(2x

2

+y

2

)=4

⇒2x

2

+y

2

=1