What is the standard form of #y= (3x+2)^2-4x #?
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"How do I solve #y'' + y = -2 sin(x)# with the initial conditions #y(0) = 0# and #y'(0) = 1#?"
1 Answer
Jun 14, 2018
Explanation:
#"the standard form of a quadratic is"#
#•color(white)(x)y=ax^2+bx+c ;a!=0#
#"expand "(3x+2)^2" using FOIL"#
#y=9x^2+12x+4-4x#
#color(white)(y)=9x^2+8x+4larrcolor(blue)"in standard form"#
