AI explanations are generated using OpenAI technology. AI generated content may present inaccurate or offensive content that does not represent Symbolab's view.
Verify your Answer
Subscribe to verify your answer
Subscribe
Save to Notebook!
Sign in to save notes
Sign in
ddx(sec(20x))
Verify
Save
Solution
sec(20x)tan(20x)·20
Show Steps
Hide Steps
Solution steps
Solve by:
One step at a time
(
4
4
2
3
−2
0
1
−2
−2
2
6
12
11
2
−4
9
20
10
10
−6
15
28
14
5
−3
)−1
Inverse matrix
A matrix is invertible if and only if there is a sequence of elementary row (or column) operations taking it to the identity matrix.
Aumentar com uma matriz identidade de 5x5
[
4
4
2
3
−2
∣
1
0
0
0
0
0
1
−2
−2
2
∣
0
1
0
0
0
6
12
11
2
−4
∣
0
0
1
0
0
9
20
10
10
−6
∣
0
0
0
1
0
15
28
14
5
−3
∣
0
0
0
0
1
]
Reduce the matrix on the left to the identity matrix
[
1
0
0
0
0
∣
1235
−435
−235
−17105
221
0
1
0
0
0
∣
0
715
215
215
−215
0
0
1
0
0
∣
−25
−45
−15
−215
415
0
0
0
1
0
∣
−1335
−92105
−46105
−2105
27
0
0
0
0
1
∣
−2735
−148105
−74105
−23105
1321
]
A matriz inversa se encontra na parte direita da matriz aumentada