Question

solve by elimination method ; x+y=11; 2x-3y=7

Answer 1

Answer:

If I = [sec? 2xdx , then the value of 1 is 4 1) tan x + c 2) tan 2x + c 5 tan 2x 3) + c 4) cot 2 x + c 2

Step-by-step explanation:

If I = [sec? 2xdx , then the value of 1 is 4 1) tan x + c 2) tan 2x + c 5 tan 2x 3) + c 4) cot 2 x + c 2

Answer 2

Answer:

(x+y=11)×2 = 2x+2y=22 -(1)

2×-3y=7 -(2)

(-) ________

-y=29 or y = -29 (ans)

Now place the value of y in 1

29+x=11

29-11= -x

x= - 18 (ans)

Step-by-step explanation:

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