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Calculus review! 
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#1
Dec1703, 03:31 PM

P: 28

Hi guys, I have a calculus test tomorrow and it'll be great if I can recieve some answers + explanations! my review sheet is attached. if this is breaking the rules im sorry.
hope this actually helps some other people too 


#2
Dec1703, 03:33 PM

P: 28

for #1
i got 3x^2sin(xy^2)*2xy [dy/dx]*y^2 whadaya thinks? 


#3
Dec1703, 03:36 PM

P: 28

for #2) its log(x)/log4 b)then graph it with my TI89 then find the deriv @ .4
at work right now so no calculator on me =) btw: does the TI89 have a test function == like the ti86? 


#4
Dec1703, 03:40 PM

P: 28

Calculus review!
#3) f'(x)=2+cosx so we have to prove f'(x) is constantly positive or negative.. but how would we approach that?



#5
Dec1703, 03:46 PM

Sci Advisor
HW Helper
P: 2,538




#6
Dec1703, 03:53 PM

P: 28




#7
Dec1703, 04:24 PM

Sci Advisor
HW Helper
P: 2,538

So, if the minimum value of cos(x) is 1, what is the minimum value of 2+cos(x)?



#8
Dec1703, 04:35 PM

P: 28

lol wow i feel so dumb
thanks onward to the next question after i finish some quick job for my boss. 


#9
Dec1703, 04:42 PM

P: 28

i got x4=y^3+y
so turn my ti89 to parametric mode and y1 = t^3+t y2= 1 right? (since its g(3) 34 = 1) then i trace for a zero? 


#10
Dec1803, 11:10 AM

P: 28

just came back from my test and i got confused on a question... find the deriv of x+sin(xy) i got (sec(x)y)/x but the calc gave me 1
thanks to all the people that replied and (attempted to) help 


#12
Dec1903, 10:56 AM

P: 28

oh my goddd what did i do!?! i messed up.. oh wells
thanks himanshu121 for reminding me of my errror 


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