P(t)=22cos(2.5piX)+98 The period of this function is the time between heartbeats. What is Dr. Evil's pulse rate (heartbeats per minute)?

Question

anonymous · Answer

do you simply plug in 60 for t?

anonymous · Answer

p(t)=blood pressure

jdoe0001 · Answer

$\bf p(t)=22cos\left({\color{blue}{ \frac{5\pi}{2}}}x\right)\qquad period\implies \cfrac{2\pi}{{\color{blue}{ \frac{5\pi}{2}}}}\cdot 60mins
$

jdoe0001 · Answer

woops, ahemm 60secs that is

jdoe0001 · Answer

though   there's an assumption that the rate given is per hearbeat per second

jdoe0001 · Answer

well, I guess if it were per minute Mr. Evil would be dead =)

anonymous · Answer

AGREED.

anonymous · Answer

so it would be 48 with the equation that you have shown...is that possible? 48 beats per minute?

jdoe0001 · Answer

I'd  think so, yes
notice the heart beats around once per sec or thereabouts

anonymous · Answer

i just dont understand the concept of the question.  if the wquation is for blood pressure....how do blood pressure and pluse relate.  i need an equation relating those.

jdoe0001 · Answer

hmm dunno those ones....

anonymous · Answer

how about...if there are .8 seconds between heartbeats, then wouldnt we do 60/.8?

anonymous · Answer

that would be 75.