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Member warned to take more care when posting images

## Homework Statement

## Homework Equations

Is my solution correct? If not then please point out the mistakes and help me solve this question in the right way. Thanks in advance.

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- Thread starter Muhammad Danish
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- #1

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Member warned to take more care when posting images

Is my solution correct? If not then please point out the mistakes and help me solve this question in the right way. Thanks in advance.

- #2

.Scott

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|a| = |b| |h|

so

|h| = |a| / |b|

and h<0

so

|h| = |a| / |b|

and h<0

- #3

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After finding h, can we solve this question by matrix method? (The way I did)|a| = |b| |h|

so

|h| = |a| / |b|

and h<0

- #4

.Scott

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You have h = -|b|/|a|.

It should be h = -|a|/|b|.

Then solve with b = a/h

It should be h = -|a|/|b|.

Then solve with b = a/h

- #5

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If we make |h| the subject, it will be |h|= |a| / |b|. The answer will be positive. So | | signs will reverse the signs and give a negative value of h?You have h = -|b|/|a|.

It should be h = -|a|/|b|.

Then solve with b = a/h

- #6

.Scott

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|a|/|b| is positive over positive, which is positive.

Per the problem, we need h to be negative...

So, h = -|a|/|b|

- #7

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How will it become negative?

|a|/|b| is positive over positive, which is positive.

Per the problem, we need h to be negative...

So, h = -|a|/|b|

If I use the equation |a| = |h| |b| then how can I get a negative value of h?

- #8

.Scott

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How will it become negative?

If I use the equation |a| = |h| |b| then how can I get a negative value of h?

By using the equation: h = -|a|/|b|

Here's the sequence:

|a| = |h| |b|

|a|/|b| = |h|

so either h = |a|/|b|

or h = -|a|/|b|

But we know from the problem statement that it must be negative.

- #9

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By removing ''| |'' from h, the other side will become negative?By using the equation: h = -|a|/|b|

- #10

.Scott

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I added some text to my last post.By removing ''| |'' from h, the other side will become negative?

Here it is again:

Here's the whole sequence:

|a| = |h| |b|

|a|/|b| = |h|

so either h = |a|/|b|

or h = -|a|/|b|

But we know from the problem statement that it must be negative.

- #11

- 70

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Like this?I added some text to my last post.

Here it is again:

Here's the whole sequence:

|a| = |h| |b|

|a|/|b| = |h|

so either h = |a|/|b|

or h = -|a|/|b|

But we know from the problem statement that it must be negative.

- #12

.Scott

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Yes!!

- #13

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Thank you!!!!Yes!!

- #14

Ray Vickson

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## Homework Statement

View attachment 227388

## Homework Equations

Is my solution correct? If not then please point out the mistakes and help me solve this question in the right way. Thanks in advance.

## The Attempt at a Solution

View attachment 227389

Your problem is totally unreadable. Please take the trouble to adhere to the PF standard, by typing out the statement of the problem. If you cannot do that, you should at least make sure you take a proper photo that will come out readable by the rest of the world.

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