f(x) = 3x2 + 5x + 2fprime(x) = 6x + 5
x=6
If: x+9+5x = 21+2x Then: x = 3
5x + x - 6x + 2x = 2x
5x+2=x+10 5x-x=10-2 4x=8 x=2
Rearrange for y, let f(x) = y, and find the derivative of f(x) with respect to x: 5x + 3y = -2 y = -(5x+2)/3 = f(x) df/dx = -5/3
x = 50
ex and ln(x) are inverse functions. With this you can get 5x = eln(5^x) Therefore you can anti-differentiate this to get eln(5^x)/(ln(5x)) Which equals 5x/ln(5x)
9.2x+5x=35
3 + 5x = 38 -> 5x = 35 -> x = 7
30 + 5x = 15 + 10x 30 = 15 + 5x 15 = 5x x = 3
0 because X= -1