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Neco 2017 Mathematics/Maths Obj And Theory Questions And Answers/ Expo/ Runs

.MATHEMATICS-AnswersVERIFIED MATHEMATICS OBJ1-10   CCAADDEECE11-20  EEBABAADCC21-30  CBEEDABDDD31-40  BCCCDDCADE41-50  BDCDDCDECD51-60  BCDCAEDCDDUse This No1 pls is more acurate====================8ai)y=(4x+9)^3Let u=4x+9y=u^3du/dx=4,dy/du=3u^2dy/dx=dy/du*dy/dx=4*3u^2=12u^2Recall u=4x+9therefore dy/dx=12(4x+9)^28aii)y=(3x-2)^3(x^2+4)^2u=(3x-2)^3, v=(x^2+4)^2du/dx=3.3(3x-2)^3-1dv/dx=2x.2(x^2+4)^2-1du/dx=9(3x-2)^2dv/dx=4x(x^2+4)dy/dx=Vdu/dx +Udv/dx=(x^2+4)^2[9(3x-2)^2+(3x-2)^3][4x(x^2+4)]=(x^2+4)(3x-2)^2(9x^2+36+12x^2-8x)=(x^2+4)(3x-2)^2(21x-8x+36)8b)y-y1=m(x-x1)y-6=2(x-2)y-6=2x-4y=2x-4+6y=2x+2 6i) 7+8+x = 47 15+ 2x =47 2x = 47- 15 2x/2 = 32/2 divide both side by 2 x=16 6ii) tran only;: 7+8 […]