if the problem you are asking is :
∫1-e3tdt then this is how it is done: u-substitution
set u=3t then du/dt=3 and du=3dt and 1/3du=dt then, you end up with:
1/3∫1-eudu after you substittute back in, and then you integrate, so you get 1/3(t-e3t/3)+C and your final answer is {1/3(t)-1/9(e3t)}+C
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You integrate each element of the matrix.
to integrate something means to put two things together to make a new one
In calculus, "to integrate" means to find the indefinite integrals of a particular function with respect to a certain variable using an operation called "integration". Synonyms for indefinite integrals are "primitives" and "antiderivatives". To integrate a function is the opposite of differentiating a function.
2x
To integrate a function you find what the function you have is the derivative of. for example the derivative of x^2 is 2x. so the integral of 2x is x^2.