d/dx (sin x) =
A-cos x
B-sin x
Csin x
Dcos x
Answer & Solution
Correct answer: D. cos x
d/dx(sin x) = cos x. (And d/dx(cos x) = -sin x; d/dx(tan x) = sec²x.)
Related questions
Rolle's theorem applies to a function $f$ on $[a, b]$ if $f$ is:The derivative of $ in(3x)$ is:A function differentiable at $x = a$ is always:A function $f$ is continuous at $x = a$ if:The derivative of $ in x$ is:The derivative of $f(x) = x^3 + 2x^2 + 1$ at $x = 1$ is:The limit $\lim_{x\to 0} in x/x$ equals:The limit $\lim_{x\to 2}(x^2 + 3x - 1)$ equals: