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Starting with x=2cosu, rearrange for u to get u=arccos(x/2), then find the upper and lower limits of the integral. We find that our lower limit goes from 1 to pi/3, ad our upper limit goes from root 2 to ...

1/2 *e^(x)(sin x -cos x)

Use integration by parts to obtain:u=arcsin(x), u'=1/(1-x²)^0.5, and v'=1, v=x
Using the equation: integral of uv' = uv - integral of u'vintegral of arcsin(x) = xarcsin(x) - inte...

72 / (3+4+5) = 6base :36 = 18height :46 = 24area = (base * height) /2area = (18*24)/2=216 cm ^2

x²+6x+5=0 First of all half the x coefficient and write (x+6/2)² the take away the (6/2)² and add on the 5
(x+3)²-9+5=0
(x+3)²-4=0 ...