Find y'' of: x - ex
-ex
d/dx -5x4 = ?
-20x3
Find equation of tangent line:
f(x)=x2+4x-3 ; x= -5
y=-6x-28
f(x)=x²ex, what is f′(x)?
xex(x+2)
d/dx x²+4x3-10 =
2x+12x2
What is the instantaneous velocity at the given time?s(t)=(3t2-1)/t at time t=1 seconds (s is in cm)
7 cm/sec
Differentiate y=x2(x3-1)
y′ =5x4-2x
Differentiate y= (1-2x) / (1+2x)
y′= -4 / (1+2x)2
Differentiate: y=tanx + cos x
y′ =sec2x-sinx
d/dx 3x²-x+3 =
6x-1
When does a particle change direction?
v(t)=0 and there's a change of sign!
Differentiate y=(3x2-5)(2x+1)
y′ =18x2+6x-10
find the equation of tangent line at point:
f(x)=x3/(x+1) at (1, 0.5)
y= 5/4x-3/4
Differentiate: y=tcost
y'=cost - tsint
Find the derivative of the function at the given number.
f(x)=x1/2 ; at x=4
1/4
Find y'' of f(x)=xex
y′'=ex(2+x)
Differentiate y= ex/x2
y′ = ex(x-2)/x3
y=sinx/ex
y'=(cosx-sinx)/ex