Posted by **AAron** on Thursday, March 1, 2012 at 8:08pm.

Determine if the statement is always true, sometimes true, or never true.

If y is a function of x, and is also a function of t. then dy/dx = dy/dt

explain.

i think its sometimes true but i don't know why it is. am i right?, and can you please explain me y this is the case? Thank you for your time

- Calculus theory -
**bobpursley**, Thursday, March 1, 2012 at 8:18pm
it could be true, if x=t

But it would be a rare case...

for instance, x= t^2

y= x^3

dy/dx= 3x^2

y= x^3=t^6

dy/dt=6t^5=6x^2 sqrtx

so in general, dy/dx does not = dy/dt

it x=t, it will work out.

dy/dx=1=dy/dt

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