Question

Resolve
1 /
a²-x²=
1) 1/a(a-x) + 1/2a(a+x)
2) 1/3a(a-x)+1/2a(a+x)
3) 1/2a(a-x)+1/2a(a+x)
4) 1/2a(a-x)+1/a(a+x)
please give amswer.​

Answer 1

Answer:

Correct option is

A

−

3

2

<a<

3

2

Given, y=x

2

−ax+1−2a

2

>0

So, D<0

a

2

−4+8a

2

<0

⇒9a

2

−4<0

⇒(3a+2)(3a−2)<0

−

3

2

<a<

3

2

Answer 2

Given, y=x

2

−ax+1−2a

2

>0

So, D<0

a

2

−4+8a

2

<0

⇒9a

2

−4<0

⇒(3a+2)(3a−2)<0

−

3

2

<a<

3

2