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# 4-c - Surname(blockletters Given Name Student Number Math...

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Unformatted text preview: Surname:(blockletters) Given Name: Student Number: Math 122 TEST 4 (Based on Assignments 11, 12, 13, and 14) Version 2A Jan.27, 2011 This test consists of 3 questions to be answered in the space provided. Show all work and give explanations when needed. “3 l db 3") s w w W“ 1. (21) Find the solution of the differential equation E = b4 and 6(0) = 1.1. I? 1 I gw 74"“ ,H' (b) At what value oft does the solution approach inﬁnity? g “in 7 F g (0) Sketch the solution from t = 0 to the value found in part (b) on the grid {/ , 7‘ b“) H ‘ me :'C- I 1 given below, being careful to label the axes and dominant features, and to use an appropriate scale. Surname: Given Name: db 2. If the model of bacterial population growth is a? = be) where Mb) is a linear function” ) 9 _ (a) Find Mb) if M0) = 2, and A decreases with a slope of —0.005. A , , C I“. ’ / I Is b(t) increasing when I) = 100? Is b(t) increasing when I) = 500? ’Ifjiir‘H-l [r‘ ‘3 A” a .2 al A, a?” "w ".2, “(Dear-‘3 4, *1!" ram— _ ff ‘1. 1 l ' 3’] r] .J‘J ) ( r37" I is? L‘ ‘5‘: /0 C) ( 0"?" :‘l r .r ‘3 L", ... 31 r a I .3. ,, a... / O( i‘ {f i we“ “’3 r C b (2") £43 Lad u- A .(j A) :— /0 O L 7.. Libya ‘ 4\J ’ k j. I \ :_ rd 3 (“m ()rL] J J r 11', Surname: Given Name: 3. The concentration of a toxin in a. cell is increasing at a rate of 4.56—0'9tpmol/L/s, starting from a concentration of 5p moi/L. If the cell is poisoned when the concentration exceeds 25nmol/L, could this cell survive? :74 I, I“ - 4’4; was: *4/4/3 ) J/c / ’ r 1! «L913 Er I git—f“? L". ' '6 MM {{‘f I ‘ V‘ﬂ‘t L "l [I C." rm i I! r 4‘ ‘—— 91; O4 k ‘ "f— 3 ’ 1 “ CV.) / ,. r _ 1‘” fl t; i wt,» 7 L/L’_ t» (I ( 'l ‘ m f f .r' ...
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