! y x + x –= − ! "#$%&'()#* + x x m – –+ = ,-.(/! " ! 0%&'()#* x x 1 3 log 3= "--%1* I x dx 2 2 0 4= − ∫ "#0"2340"33 x y x 2 3 3 2 + = − )5678! ! 9:;)<,;-)=> h r3= !"-?/-@>( A>$-;)<! #$! %&'()&*+,-./0,&)&1, 23"")(;B((C@DE4$FG774H+7747+7 I! J((FH>B(!K%&'()#5H! K%&'()#LM>A>I$F4H4C! 43"#%JENO* z i z z i z 2 1 − = − = − 5&'()&*+,-./0,&,,-)3( 26 "")(;B(($FG774HI7+7G 7G7I! "#P:#>QF)&R(S(H! K%&'()#LM>,1F%@TUH! 46 0%&'()#>)V%W%%J* ( ) ( ) I I +z z z z z z–+ + + + + = GGGGGGGGGGGGGGGGGGGGGGGG 78 +XXI " x 1 3 = 2) I π = 3) [ ] [ ] y y 2;3 2;3 max 3; min 7= − = − ! xq S r 2 2 3 π = 4 V r 3 3 π = 23 x t BC y t z t : 1 1 3 = = − = + Y + 2 2 2 x y z x y z+ + − + − = 43 z i= + 26 x y z 231 27 36 ; ; 51 51 51 − = = = ÷ 2 2 2 x 1 y 3 z 2 760 ( ) ( ) ( – ) 17 + + − + = 46 i z z z 1 15 1; 4; 2 − ± = − = − = . z+ + − + − = 43 z i= + 26 x y z 231 27 36 ; ; 51 51 51 − = = = ÷ 2 2 2 x 1 y 3 z 2 760 ( ) ( ) ( – ) 17 + + − + = 46 i z z z 1 15 1; 4; 2 − ± = − = − = . r3= !"-?/-@>( A>$-;)<! #$! %&'()&*+,-./0,&)&1, 23"")(;B((C@DE4$FG774H+7747+7 I! J((FH>B(!K%&'()#5H! K%&'()#LM>A>I$F4H4C! 43"#%JENO* z i z z i z 2 1 − = − = − 5&'()&*+,-./0,&,,-)3( 26 "")(;B(($FG774HI7+7G 7G7I! "#P:#>QF)&R(S(H! K%&'()#LM>,1F%@TUH! 46. 7G7I! "#P:#>QF)&R(S(H! K%&'()#LM>,1F%@TUH! 46 0%&'()#>)V%W%%J* (