Please help with this I'm kinda cheeks when it comes to math

We're choosing among

and we have to figure out which signs goes with which graph.

If they're both positive we have a pretty normal exponential,

That's going to be zero as x gets negative and exponentially explode toward positive infinity for positive x.  Graph 3.

That's the same as the last one except it goes to negative infinity.  It's the last one reflected in the x axis.  Graph 4.

When we have a fraction between 0 and 1 for the base as x gets bigger this goes to zero and as x gets more negative, this diverges toward positive infinity.   It's our first graph reflected in the y axis, the same as .  That's our first graph reflected in the y axis.  Graph 1.

That's the same as .  As x gets more negative y diverges toward negative infinity.   Graph 2.

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v