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?
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4 Answers
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9
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^.
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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) $\endgroup$ Jul 24, 2016 at 14:03
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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. $\endgroup$– KevinOrrJul 25, 2016 at 3:34
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1$\begingroup$ @KevinOrr "<>" is used to write equations. Its a latex syntax. $\endgroup$ Jul 25, 2016 at 4:26
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$\begingroup$ 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. $\endgroup$– iloahzJul 25, 2016 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. $\endgroup$ Jul 25, 2016 at 11:12
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1
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.
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$\begingroup$ Good, but doubt it's right as m is definitely used in the equation e=mc2 $\endgroup$– AndyTJul 25, 2016 at 13:42
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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.
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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?