24
$\begingroup$

I take direction and help find density.

I am the graph of a function where none of it is negative.

But I am not used to make equations

Nor am I one to raise to power.

What am I?

$\endgroup$
55
$\begingroup$

You are

V

I am a shape and yet I'm a letter

V is a letter, and it can describe a shape, e.g. migrating birds fly in a V-shape.

I take direction and help find density.

V points downwards. It's in the denominator of the formula for density, $\rho=\frac mV$.

I am the graph of a function where none of it is negative.

The graph of the absolute-value function is shaped like a V.

But I am not used to make equations
Nor am I one to raise to power.

It's not <,> or ^.

$\endgroup$
  • 2
    $\begingroup$ I interpreted "I take direction" as v being the mathematical symbol for velocity, which is a vector (i.e. velocity having both speed and direction) $\endgroup$ – Micheal Johnson Jul 24 '16 at 14:03
  • 2
    $\begingroup$ I don't quite understand why V can't be part of an equation. In fact, it is in the formula for density. $\endgroup$ – KevinOrr Jul 25 '16 at 3:34
  • 1
    $\begingroup$ @KevinOrr "<>" is used to write equations. Its a latex syntax. $\endgroup$ – The Great Duck Jul 25 '16 at 4:26
  • $\begingroup$ For I take direction, could it be because of V sounds like "way"? And I am not very much to the explanation "...fly V-shape", what about "W-shape" and "X-shape", every letter can be a shape this way. $\endgroup$ – iloahz Jul 25 '16 at 6:45
  • 2
    $\begingroup$ inequation, an equation is just the opposite. I was confused by this, too. Many languages (LaTeX, SQL, Pascal, ...) use <> as not equal. $\endgroup$ – rexkogitans Jul 25 '16 at 11:12
9
$\begingroup$

Are you

Mass, $m$

I am a shape and yet I'm a letter

Every mass has a shape and is represented by $m$.

I take direction and help find density.

Mass can be given a direction by a velocity vector, etc. $Density$ $= \frac{mass}{volume}$.

I am the graph of a function where none of it is negative.

All values of a probability mass function must be positive.

But I am not used to make equations

$m$ is generally not the variable in an equation. For instance, in graphing kinetic energy the velocity is the variable of concern.

Nor am I one to raise to power.

I can't think of where mass is squared or cubed...but I'm really tired right now.

$\endgroup$
  • $\begingroup$ Good, but doubt it's right as m is definitely used in the equation e=mc2 $\endgroup$ – AndyT Jul 25 '16 at 13:42
4
$\begingroup$

Are you

Volume

I am a shape and yet I'm a letter

Volume is a shape, and a volume (drive) on a computer is usually designated by a letter

I take direction and help find density.

Volume (of a radio for example) can go up and down, and density is found by dividing mass by volume

I am the graph of a function where none of it is negative.

I'm thinking this could be related to integrals (in 2D space this would be Area, but this must be 3D space?

But I am not used to make equations

Rules out any operators, volume itself isn't used to make equations

Nor am I one to raise to power.

Rules out ^ as the answer

I don't like my chances here, the explanations aren't really that solid.

$\endgroup$
1
$\begingroup$

Long shot the letter I (capital i)

I take direction and help find density.

The I is basicly a line, the equation

   m
p=---
   v

has a line in the center (it's a I rotated 90 degrees), it takes direction by the order of m/v if you change m/v from position the direction of the formula changes.

I know it does not answer multiple questions (yet) but the reason I belive it's the I:

I take direction and help find density.

I am the graph of a function where none of it is negative.

But I am not used to make equations

Nor am I one to raise to power. What am I?

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.