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Bug3392
Group Title
f(x)=tan(x)
Find the limit as x approaches pi/2 from the negative and positive sides then find the limit as x approaches 0.
Help please!! :(
 2 years ago
 2 years ago
Bug3392 Group Title
f(x)=tan(x) Find the limit as x approaches pi/2 from the negative and positive sides then find the limit as x approaches 0. Help please!! :(
 2 years ago
 2 years ago

This Question is Open

aryok08 Group TitleBest ResponseYou've already chosen the best response.0
i think if you make a graphic you can solve the problem more easy , substitute the values of x and make the graphic.
 2 years ago

yasin08 Group TitleBest ResponseYou've already chosen the best response.0
Here how you can proceed,tanx at the positive side of pi/2 (right hand) takes nonpositive values and at the left side it takes nonnegative values now for limit to exist limit from tight and left must exist and be equal to each other so only possible choice in this case is both to be 0 however as one approaches to pi/2 sinx increase and cosx decreases leading to tanx become larger over any bounds so at left side tangent goes to infinity on the posive side and at right limit tangent goes to inifinity at the negative side so limit does not exist
 2 years ago

MikeCasssidy Group TitleBest ResponseYou've already chosen the best response.0
\[\tan x=\sin x/\cos x\]\[\cos (pi/2) = 0\] so as tan x approaches \[pi/2\] from right or left it goes to infinity as cos x gets smaller and smaller.
 2 years ago

adi171 Group TitleBest ResponseYou've already chosen the best response.0
look at the graph of tanx.... and see where does it tends when it is approaching pi/2... so it is infinity...from both sides...!!!
 2 years ago
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