Question

19. If a, b, care in A.P then find the relation between d, Vallut.
20. Write the quadratic equation whose roots are 3 and
SECTION - III
Note: 1) Answer all the questions,
ii) Each question carries 2 marks.
8 x 2 = 16 M
21. A solid is in the form of a cylinder with hemispherical ends. The total height of the solid
of the cylinder is 7 cm. Find the volume and total surface area of
no
the solid.
22. Find the value of k in the given equation 2x2 + 3x + k=0 whose roots are real and equal.
23. Give an example of the polynomial of deg p(x) when p(x), g(x), q(x) and r(x) satisfy the
division algorithm.
24. Find x, so that x, x + 2, x + 3 are consecutive terms of a G.P.
ta
3. Find out whether the lines represented by the pairs 9x + 3y + 12 = 0, 18+o
linear equations intersecting at a point or parallel or coincident.
243
26. If -2log 5 +
log 9 - log 3 = log x then find the value of 'x.
137 c
m
Paper -1 : Practice Paper - 2
Mathematics : Class - 10 (A.P)​

Answer 1

Answer:

Since | | operation is defined for all real numbers, domain D consists of all real numbers x, x∈R.

Since | | operation yields number greater of equal to zero, the range of -|x-2| is (-∞;0]. (Pay attention to the minus sign in front of |x-2| ).

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